ABSTRACT Background. Electron density (ED) imaging might be able to detect myocardial tissue differences indistinguishable for con ventional non-contrast computed tomography (CT). Objectives. To evaluate whether there are differences in myocardial ED associated with sex, and if present, their relationship with cardiovascular risk factors or coronary calcification. Methods. Patients were participants of a prospective single center observational study comprising asymptomatic subjects between 50 and 75 years old, referred for a low-dose chest CT. All images were obtained using a dual-layer detector spectral CT, and evaluated using conventional CT (120 kVp) and ED images. Results. A total of 171 patients were included. Myocardial attenuation was not related to sex or coronary risk factors (all p >0.05), whereas the percent electron density relative to water (%EDW) was significantly higher among males (p <0.0001), and patients with diabetes (p = 0.007), hypertension (p = 0.004), and obesity (p = 0.004). The extent of coronary artery calcification was unrelated to neither the myocardial attenuation, nor the myocardial ED. At univariate analysis, male sex was the only variable associated with a high %EDW (p = 0.011), whereas age, diabetes, obesity, smoking, hypertension, and CACSIS (coronary artery calcification segment involvement score), were not. Logistic regression analysis including sex, obesity, diabetes, and hypertension in the model, identified male sex as the only independent predictor of a high %EDW (OR 2.51, 95%CI 1.23-5.34, p=0.016). Conclusions. In this study, ED imaging identified myocardial tissue differences that conventional CT was unable to discriminate, with a higher %EDW in men and in patients with cardiovascular risk factors. Male sex was the only independent predictor of a high %EDW

RESUMEN Introducción. Las imágenes de densidad electrónica (DE) podrían detectar diferencias miocárdicas tisulares no distinguibles mediante la tomografía computarizada (TC) convencional sin contraste. Objetivos. Evaluar si existen diferencias de DE miocárdica asociadas al sexo, y de estar presentes, su relación con factores de riesgo cardiovascular o calcificación coronaria. Material y métodos. Los pacientes pertenecían a un estudio prospectivo observacional de centro único que incluyó sujetos asintomáticos entre 50 y 75 años, derivados para realizar una TC de tórax de baja dosis. Todas las imágenes se obtuvieron mediante un equipo de TC espectral dual, y fueron evaluadas utilizando imágenes de TC convencional (120 kVp) y de DE. Resultados. Se incluyó un total de 171 pacientes. La atenuación miocárdica no estuvo relacionada con el sexo o factores de riesgo coronarios (todos con p >0,05), mientras que el porcentaje de densidad electrónica respecto del agua (%EDW, por su sigla en inglés) fue significativamente mayor en la población masculina (p<0,0001), y en los pacientes con diabetes (p=0,007), hipertensión (p=0,004) y obesidad (p=0,004). La extensión de la calcificación coronaria no estuvo relacionada ni con la ate nuación ni con la DE miocárdicas. En el análisis univariado, el sexo masculino fue la única variable asociada a un %EDW elevado (p=0,011), mientras que la edad, la diabetes, la obesidad, el tabaquismo, la hipertensión y el score CACSIS (score de calcificación de las arterias coronarias), no. Un modelo de regresión logística que incluyó sexo, obesidad, diabetes e hipertensión, identificó al sexo masculino como el único predictor independiente de %EDW elevado (OR 2,51, IC 95% 1,23-5,34, p=0,016). Conclusiones. En este estudio, las imágenes de DE identificaron diferencias en el tejido miocárdico que la TC convencional fue incapaz de discriminar, con un mayor %EDW en hombres y en pacientes con factores de riesgo cardiovascular. El sexo masculino fue el único predictor independiente de %EDW elevado.

Abstract Introduction: Cardiovascular disease is an important cause of death among patients with chronic kidney disease (CKD). Valve calcification is a predictor of cardiovascular mortality and coronary artery disease. Objective: To assess heart valve disease frequency, associated factors, and progression in CKD patients. Methods: We conducted a retrospective study on 291 CKD patients at Hospital das Clínicas de Pernambuco. Inclusion criteria were age ≥ 18 with CKD and valve disease, while those on conservative management or with missing data were excluded. Clinical and laboratory variables were compared, and patients were categorized by dialysis duration (<5 years; 5–10 years; >10 years). Statistical tests, including chi-square, Fisher’s exact, ANOVA, and Kruskal-Wallis, were employed as needed. Simple and multivariate binary regression models were used to analyze valve disease associations with dialysis duration. Significance was defined as p < 0.05. Results: Mitral valve disease was present in 82.5% (240) of patients, followed by aortic valve disease (65.6%; 86). Over time, 106 (36.4%) patients developed valve disease. No significant association was found between aortic, pulmonary, mitral, or tricuspid valve disease and dialysis duration. Secondary hyperparathyroidism was the sole statistically significant factor for mitral valve disease in the regression model (OR 2.59 [95% CI: 1.09–6.18]; p = 0.031). Conclusion: CKD patients on renal replacement therapy exhibit a high frequency of valve disease, particularly mitral and aortic valve disease. However, no link was established between dialysis duration and valve disease occurrence or progression. Introduction CKD. . (CKD) Objective factors Methods 29 Pernambuco 1 excluded compared <5 5 (< years 510 10 5–1 >1 years. years) tests chisquare, chisquare chi square, square chi-square Fishers Fisher s exact ANOVA KruskalWallis, KruskalWallis Kruskal Wallis, Wallis Kruskal-Wallis needed 005 0 05 0.05 Results 825 82 82.5 240 (240 65.6% 656 65 6 (65.6% 86. 86 86) time 36.4% 364 36 4 (36.4% pulmonary OR 259 2 59 2.5 95% 95 [95 CI 1.09–6.18 109618 09 1.09–6.18] 0.031. 0031 0.031 031 0.031) Conclusion However (CKD ( 51 5– > 00 0.0 8 82. 24 (24 65.6 (65.6 36.4 3 (36.4 25 2. 9 [9 1.09–6.1 10961 003 0.03 03 0. (2 65. (65. 36. (36. [ 1.09–6. 1096 (65 (36 1.09–6 109 (6 (3 1.09– 1.09 1.0 1.

Resumo Introdução: Doenças cardiovasculares são uma causa significativa de morte em pacientes com Doença Renal Crônica (DRC). A calcificação valvar é preditor de mortalidade cardiovascular e doença arterial coronariana. Objetivo: Avaliar a frequência, fatores associados e progressão de valvopatias em pacientes com DRC. Métodos: Coorte retrospectiva com 291 pacientes ambulatoriais no Hospital das Clínicas de Pernambuco. Inclusão: ≥18 anos com DRC e valvopatia; exclusão: tratamento conservador ou dados incompletos. Variáveis clínicas e laboratoriais foram comparadas e categorizadas por tempo de terapia dialítica (TTD): <5 anos, 5–10 anos, >10 anos. Foram aplicados os testes Qui-quadrado, exato de Fisher, ANOVA, Kruskal-Wallis. Associação entre valvopatia e TTD foi avaliada por regressão binária. Significância foi definida como p < 0,05. Resultados: A valvopatia mitral foi encontrada em 82,5% (240) dos casos, seguida da aórtica (65,6%; 86). Houve progressão da doença valvar em 106 (36,4%) pacientes. Não houve associação entre valvopatias aórtica, pulmonar, mitral ou tricúspide e TTD. Hiperparatireoidismo secundário foi a única variável explicativa significativa na regressão para valvopatia mitral (OR 2,59 [IC95%: 1,09–6,18]; p = 0,031). Conclusão: Encontramos alta frequência de valvopatias, especialmente mitral e aórtica, aem pacientes com DRC. Não houve associação entre TTD e valvopatia. Introdução . (DRC) coronariana Objetivo Métodos 29 Pernambuco Inclusão 18 ≥1 exclusão incompletos (TTD) 5 510 10 5–1 >1 Quiquadrado, Quiquadrado Qui quadrado, quadrado Qui-quadrado Fisher ANOVA KruskalWallis. KruskalWallis Kruskal Wallis. Wallis Kruskal-Wallis binária 005 0 05 0,05 Resultados 825 82 82,5 240 (240 casos 65,6% 656 65 6 (65,6% 86. 86 86) 36,4% 364 36 4 (36,4% pulmonar OR 259 2 59 2,5 IC95% IC95 IC [IC95% 1,09–6,18 109618 1 09 1,09–6,18] 0,031. 0031 0,031 031 0,031) Conclusão (DRC ≥ (TTD 51 5– > 00 0,0 8 82, 24 (24 65,6 (65,6 36,4 3 (36,4 25 2, IC9 [IC95 1,09–6,1 10961 003 0,03 03 0, (2 65, (65, 36, (36, [IC9 1,09–6, 1096 ( (65 (36 [IC 1,09–6 109 (6 (3 1,09– 1,09 1,0 1,

Abstract Introduction : Calciphylaxis is a serious vascular dis order characterized by calcification of tunica media, in timal hyperplasia, thrombosis, and skin necrosis. It was described in patients with renal failure (UC), although it can occur in its absence (NUC). Its risk factors are under study and its diagnosis can be complex. Over a decade ago, its mortality was estimated at 60-80%. Recent stud ies indicate that it has decreased (40%). Methods : A retrospective study was carried out in the period between January 1, 2011 and December 31, 2019. The past medical record, clinical characteristics, labo ratory and histopathological findings, and evolution of all patients with calciphylaxis evaluated at the Hospital Italiano de Buenos Aires were reviewed. Results : Thirty-nine patients were included. Sixty-one percent were men and 39% were NUC cases. Eighty-two percent had arterial hypertension, 66% obesity and 46% diabetes. Of those, 49% received coumarin anticoagulants. All patients with NUC and 75% with UC presented ulcers with necrosis, located more frequently on the legs. In 72% of the cases the histological diagno sis was made with one biopsy. In all the treatment was multimodal and mortality at one year was 42%. Conclusion : We observed a high proportion of pa tients with NUC, in relation to what is reported in the literature, and that half received vitamin K antagonists. The histological diagnosis was made with one biopsy in most of the cases, as the surgical technique for taking the sample, the Von Kossa staining and the evaluation by an expert pathologist were the key of it.

Resumen Introducción : La calcifilaxis es un trastorno vascular grave caracterizado por depósito de calcio en túnica me dia arteriolar, trombosis y necrosis cutánea. Se describió en pacientes con insuficiencia renal (CU), aunque puede producirse en su ausencia (CNU). Sus factores de riesgo están en estudio y su diagnóstico puede ser complejo. Su mortalidad se estimaba en 60-80%, aunque trabajos recientes indican que ha disminuido (40%). Métodos : Estudio retrospectivo entre el 1/1/2011 y el 31/12/2019. Se revisaron los antecedentes, las ca racterísticas clínicas, los hallazgos de laboratorio e histopatológicos, y la evolución de todos los pacientes con diagnóstico de calcifilaxis evaluados en el Hospital Italiano de Buenos Aires. Resultados : Se incluyeron 39 pacientes. El 61.5% (24) eran hombres y 38.5% (15) fueron casos de CNU. De éstos, 82% presentaba hipertensión arterial, 66% obesidad y 46% diabetes. El 49% recibía anticoagulantes dicumarínicos. Todos los pacientes con CNU y 75% con CU presentaron úlceras de fondo necrótico, localizadas con mayor frecuencia en las piernas. En 72% de los casos el diagnóstico histológico se efectuó con una toma de biopsia. En todos, el tratamiento fue multimodal y la mortalidad al año fue de 42%. Conclusión : Observamos una elevada proporción de pacientes con CNU, en relación con lo comunicado en la literatura, y la mitad recibía anticoagulantes di cumarínicos. El diagnóstico histológico se efectuó por biopsia en la mayor parte de los casos, para lo cual la toma quirúrgica de la muestra, la tinción con Von Kossa y la evaluación por un patólogo experto fueron claves.

Abstract Background: Medial arterial calcification (MAC) of the foot is a predictor of cardiovascular morbidity and mortality in diabetics. The MAC score is a tool to describe with plain radiographs the burden of inframalleolar arterial calcification. Objective: To determine the degree of association between MAC and the risk of major amputation. Methods: Retrospective longitudinal cohort study analyzing radiographs of extremities with diabetic foot from March 1, 2021 to July 31, 2022. They were classified according to their MAC score and interventions performed at 6 months were recorded; chi-square test and relative risk test were performed to determine significant association between severe MAC and major amputation. Results: Out of 102 extremities studied, 37 patients (35.9%) had severe MAC; 28 suffered major amputation, with a significant risk estimation (RR: 3.28, CI: 95% 1.985-5.428). Conclusion: Severe MAC in patients with diabetic foot increases 3.2 times the risk of a major amputation during the 6 months following the appearance of an ulcer.

Resumen Antecedentes: La calcificación arterial de la capa media en el pie (CAMP) es un factor predictivo de morbilidad y mortalidad cardiovascular en diabéticos. La puntuación de CAMP es una herramienta para describir con radiografías simples la carga de calcificación arterial infra maleolar. Objetivo: Determinar el grado de asociación entre CAMP con el riesgo de amputación mayor. Métodos: Estudio longitudinal retrospectivo de cohortes analizando radiografías de extremidades con pie diabético del 1 marzo de 2021 al 31 julio de 2022. Se clasificaron según su puntuación CAMP y se registraron las intervenciones realizadas a 6 meses; se realizó prueba de chi cuadrada y riesgo relativo para determinar asociación significativa entre CAMP grave y amputación mayor. Resultados: De 102 extremidades estudiadas, se encontró CAMP grave en 37 pacientes (35.9%); 28 sufrieron amputación mayor, con una estimación de riesgo significativa (RR: 3.28, IC: 95% 1.985-5.428). Conclusión: CAMP grave en paciente con pie diabético aumenta 3.2 veces el riesgo de una amputación mayor durante los 6 meses posteriores a la aparición de una úlcera.

Abstract Background: Congenital heart disease poses a therapeutic challenge, specifically pulmonary valve stenosis. This has been treated for many years with invasive procedures and bioprostheses, which over time, become dysfunctional due to the accumulation of fibrous tissue and calcification. Objective: The aim of this study is to describe the use of endovascular management in the right ventricular outflow tract, as the beginning of an ongoing effot to improve pediatric outcomes in developing countries. Methods: Seven pediatric patients with endovascular management of the right outflow tract are presented. Three of them underwent surgical valvuloplasty with persistent pulmonary stenosis. They decided to insert a percutaneous transcatheter pulmonary valve (PPVI) with a Melody valve using the valve-in-valve technique, with 100% stenosis and no complications associated with the procedure. Results: Four patients with successful percutaneous valve implantation had different congenital heart diseases. In addition, the case of a patient in whom an intentional pulmonary valve fracture was performed, an innovative procedure in pediatric endovascular management in the country, is highlighted. Conclusions: The procedure was minimally invasive, safe, and effective. The IVPP technique could be a viable option in our country for managing failed primary valve implantations or even in native tracts.

Resumen Antecedentes: Las cardiopatías congénitas plantean un desafío terapéutico, específicamente la estenosis de la válvula pulmonar. Esta ha sido tratada durante muchos años con procedimientos invasivos e inserción de bioprótesis, que con el tiempo se vuelven disfuncionales y pueden reestenosarse por acumulación de tejido fibroso y calcificación. Debido a las complicaciones generadas por la injuria quirúrgica, se han descrito medidas menos invasivas para el manejo de la estenosis residual e inicial por medios endovasculares en adultos y más recientemente en población pediátrica. Objetivo: El objetivo de este reporte es describir la misma en el manejo endovascular del tracto de salida del ventrículo derecho, como el inicio de un trabajo continuo para la mejoría de los resultados pediátricos en países en vía de desarrollo. Métodos: Se presentan siete casos pediátricos de manejo endovascular del tracto de salida derecho; tres de ellos sometidos a valvuloplastia quirúrgica con persistencia de la estenosis pulmonar, por lo cual se decidió inserción percutánea de una válvula pulmonar (IVPP) transcatéter con válvula Melody utilizando la técnica valve-in-valve, con lo que se consiguió una resolución del 100% de la estenosis y no se presentó ningún tipo de complicación asociada al procedimiento. Resultados: En cuatro pacientes se logró una implantación exitosa de la válvula por vía percutánea en diferentes cardiopatías congénitas, siendo uno de ellos en tracto nativo; además, destaca el caso de un paciente en quien se realizó fractura intencional de la válvula pulmonar, procedimiento innovador en el manejo endovascular pediátrico en Colombia. Conclusiones: En estos pacientes el procedimiento resultó ser poco invasivo, seguro y efectivo. La técnica IVPP podría ser considerada una opción viable en Colombia (y en otros países en desarrollo) para el manejo de implantes valvulares primarios fallidos o incluso en tractos nativos.

ABSTRACT: Nowadays it is very common to receive patients in the dental clinic reporting unilateral or bilateral pain in the lateral area of the face, more specifically in the mandibular rami area. The origin of this pain can often be dental, muscular, from the temporomandibular joint or even tonsillar. Because the named pathologies are more frequent, many times the clinician does not consider that the cause of this pain could be associated with Eagle syndrome. This research was based on the need to use panoramic radiographs as a tool to associate pain that does not refer to conventional treatments with calcifications of the stylohyoid complex, many times radiographic findings that are not commonly considered by the clinician. This correlational cross analytical study was carried out at San Sebastián University Health Center. A random sample of 815 radiographs and associated clinical records was taken, in which the presence, type and location of calcifications of the stylohyoid complex were analyzed, as well as whether the patients reported painful symptoms associated with Eagle syndrome. Subsequently, a descriptive, exploratory, and inferential analysis of association between variables was conducted. The percentage of patients who presented calcifications of the stylohyoid complex reached 85.4%, being the majority the elongated type (70.98%), followed by the segmented type (26.72%) and far below the pseudoarticulated type (2.3%). Regarding the prevalence of symptoms, the vast majority of patients did not present (96.32%), without seeing differences according to gender or age. Finally, when performing the association analysis, the calculated X2 value was 3.171, lower than the critical tabulated X2 value of 3.841. Obtaining a calculated X2 lower than a critical tabulated X2 showed that there is no association between the presence of calcifications of the stylohyoid complex and associated clinical symptoms. In addition, the prevalence of calcifications and their types did not vary according to age or gender, which did not allow us to establish a causal relationship between the variables.

RESUMEN: Hoy en día es común recibir pacientes en la clínica odontológica relatando dolor uni o bilateral en la zona lateral de la cara, más específicamente en la zona de las ramas mandibulares. Este dolor puede ser muchas veces de origen dental, muscular masticatorio, de las articulaciones temporomandibulares, o incluso tonsilar. Debido a que las anteriores son patologías más frecuentes, muchas veces el clínico no considera que la causa de estos dolores podría estar asociada al síndrome de Eagle. Esta investigación se fundamentó en la necesidad de utilizar las radiografías panorámicas como herramienta para asociar dolores que no remiten a tratamientos convencionales a calcificaciones del complejo estilohioideo, muchas veces hallazgos radiográficos que no son comúnmente tomados en consideración por el clínico. El objetivo del estudio fue eterminar la asociación entre calcificaciones del complejo estilohioideo en radiografías panorámicas y sintomatología clínica dolorosa en pacientes del centro de salud de la Universidad San Sebastián, sede Santiago, Chile. Se realizó un estudio correlacional, analítico y retrospectivo en el Centro de Salud de la Universidad San Sebastián. Se tomó una muestra aleatoria de 815 radiografías y fichas clínicas asociadas, en las cuáles se analizó la presencia, tipo y ubicación de calcificaciones del complejo estilohioideo, así como, si los pacientes relataron sintomatología dolorosa asociable al Síndrome de Eagle. Posteriormente se realizó un análisis descriptivo, exploratorio e inferencial de asociación entre variables. El porcentaje de pacientes que presentó calcificaciones del complejo estilohioideo alcanzó un 85,4%, siendo la mayoría de tipo elongado (70,98%), seguida del tipo segmentado (26,72%) y muy por debajo el tipo pseudoarticulado (2,3%). Con respecto a la prevalencia de sintomatología la gran mayoría de los pacientes no presentó (96,32%), sin verse diferencias según sexo o edad. Por último, al realizar el análisis de asociación el valor de X 2 calculado fue de 3,171, menor al valor de X2 crítico tabulado de 3,841. Al obtener un X2 calculado menor a un X2 crítico tabulado se demostró que no existe una asociación entre la presencia de calcificaciones del complejo estilohioideo y sintomatología clínica asociada. Además, las prevalencias de calcificaciones y sus tipos no variaron según la edad o género, lo que no nos permitió establecer una relación causal entre las variables.

ABSTRACT Objective: To explore the diagnostic value of the TUIAS (SW_TH01/II) computer-aided diagnosis (CAD) software system for the ultrasound Thyroid Imaging Reporting and Data System (TI-RADS) features in thyroid nodules. Materials and methods: This retrospective study enrolled patients with thyroid nodules in Shanghai East Hospital between January 2017 and October 2021. The novel CAD software (SW_TH01/II) and three sonographers performed a qualitative analysis of the ultrasound TI-RADS features in aspect ratio, margin irregularity, margin smoothness, calcification, and echogenicity of the thyroid nodules. Results: A total of 225 patients were enrolled. The accuracy, sensitivity, and specificity of the CAD software in “aspect ratio” were 95.6%, 96.2%, and 95.4%, in “margin irregularity” were 90.7%, 90.5%, and 90.9%, in “margin smoothness” were 85.8%, 88.5%, and 83.0%, in “calcification” were 83.6%, 81.7%, and 82.0%, in “homogeneity” were 88.9%, 90.6%, and 82.2%, in “major echo” were 85.3%, 88.0%, and 85.4%, and in “contains very hypoechoic echo” were 92.0%, 90.0%, and 92.4%. The analysis time of the CAD software was significantly shorter than for the sonographers (2.7 ± 1.6 vs. 29.7 ± 12.7 s, P < 0.001). Conclusion: The CAD system achieved high accuracy in describing thyroid nodule features. It might assist in clinical thyroid nodule analysis. Objective SW_TH01/II SWTH01II SWTHII SW TH01 II TH (SW_TH01/II computeraided computer aided (CAD TIRADS TI RADS (TI-RADS methods 201 2021 ratio irregularity smoothness calcification Results 22 sensitivity 956 95 6 95.6% 962 96 2 96.2% 954 4 95.4% 907 90 7 90.7% 905 5 90.5% 909 9 90.9% 858 85 8 85.8% 885 88 88.5% 830 83 0 83.0% “calcification 836 83.6% 817 81 81.7% 820 82 82.0% homogeneity “homogeneity 889 88.9% 906 90.6% 822 82.2% major echo 853 3 85.3% 880 88.0% 854 85.4% contains 920 92 92.0% 900 90.0% 924 92.4% 2.7 27 (2. 16 1 1. vs 297 29 29. 127 12 12. s 0.001. 0001 0.001 . 001 0.001) Conclusion SWTH TH0 20 202 95.6 96.2 95.4 90.7 90.5 90.9 85.8 88.5 83.0 83.6 81.7 82.0 88.9 90.6 82.2 85.3 88.0 85.4 92.0 90.0 92.4 2. (2 000 0.00 00 95. 96. 90. 85. 88. 83. 81. 82. 92. ( 0.0 0.

ABSTRACT Four cases of people living with HIV/AIDS (PLWHA) with calcified cerebral toxoplasmosis associated with perilesional edema causing a single episode of neurological manifestations have recently been reported. Here, we describe the first detailed description of perilesional edema associated with calcified cerebral toxoplasmosis causing three episodes of neurological manifestations in a PLWHA, including seizures in two of them. These recurrences occurred over approximately a decade. Throughout this period, the patient showed immunological and virological control of the HIV infection, while using antiretroviral therapy regularly. This case broadens the spectrum of an emerging presentation of calcified cerebral toxoplasmosis, mimicking a well-described finding of neurocysticercosis in immunocompetent hosts. HIVAIDS AIDS PLWHA (PLWHA reported Here them decade period infection regularly welldescribed well described hosts

SUMMARY OBJECTIVE: The aim of this study was to evaluate the effects of permanent placental injury due to a severe acute respiratory syndrome coronavirus 2 infection during pregnancy on feto-placental circulation. METHODS: In this cross-sectional study, 83 pregnant women with planned deliveries were divided into two groups according to their severe acute respiratory syndrome coronavirus 2 infection statuses during pregnancy. Their demographic parameters, obstetric histories, and prenatal risks were evaluated. A prenatal fetal Doppler ultrasound examination was performed for all participants, and umbilical artery and middle cerebral artery Doppler parameters were obtained. Postpartum placentas were examined for pathological findings under appropriate conditions. All placentas were evaluated according to the Amsterdam consensus criteria. Mann-Whitney U test, Student’s t-test, and chi-square test were used for comparisons. RESULTS: Demographic parameters were statistically similar, except that they were borderline significant for gestational weeks at delivery (p=0.044). In the pathological examination of the placenta, regardless of the trimester of exposure to viral infection, perivillous fibrin deposition and villus dystrophic calcification were more common in group 2 (p=0.016 and p=0.048, respectively) than in group 1. In the prenatal Doppler examination between the groups, no statistically significant difference was found for all of the umbilical artery pulsatile index, middle cerebral artery pulsatile index, and cerebro-placental ratio values. CONCLUSION: Severe acute respiratory syndrome coronavirus 2 infection during pregnancy causes an increase in perivillous fibrin deposition and villus dystrophic calcification in the placenta. Placental injury caused by the severe acute respiratory syndrome coronavirus 2 virus does not affect fetal Doppler parameters. OBJECTIVE fetoplacental feto circulation METHODS crosssectional cross sectional 8 histories participants obtained conditions criteria MannWhitney Mann Whitney Students Student s ttest, ttest t t-test chisquare chi square comparisons RESULTS similar p=0.044. p0044 p p=0.044 . 0 044 (p=0.044) placenta p=0.016 p0016 016 (p=0.01 p0048 048 p=0.048 respectively 1 index cerebroplacental cerebro values CONCLUSION p004 p=0.04 04 (p=0.044 p=0.01 p001 01 (p=0.0 p00 p=0.0 (p=0.04 (p=0. p0 p=0. (p=0 p=0 (p= p= (p

ABSTRACT Objective: Although 18F-sodium fluoride (18F-NaF) uptake is frequently observed in extraosseous metastases of medullary thyroid carcinoma (MTC) with calcification, it can also occur in metastatic sites without visible calcium deposition, leading to the hypothesis that visually undetectable calcium accumulation may be responsible for this uptake. The aim of this study was to indirectly support this hypothesis by analyzing the correlation between the degree of 18F-NaF uptake and radiodensity in extraosseous MTC metastases, since calcium deposition can increase attenuation even when not visually detectable. Subjects and methods: Extraosseous metastatic lesions of 15 patients with MTC were evaluated using 18F-NaF positron-emission tomography (PET)/computed tomography (CT) and segmented by levels of standardized uptake value (SUV). The correlation between mean SUV and mean Hounsfield unit (HU) values was assessed for the entire group of segments and for two subgroups with different mean HU values. Results: Very high correlations were observed between mean SUV and mean HU values for both the entire group of segments and the subgroup with a mean HU value greater than 130 (p = 0.92 and p = 0.95, respectively; p < 0.01). High correlation (p = 0.71) was also observed in the subgroup with mean HU values ranging from 20 to 130 (p < 0.01). Conclusion: The findings of the present study suggest that there is an association between 18F-NaF uptake and calcium deposition in extraosseous metastases of MTC, supporting the hypothesis that visually undetectable calcium accumulation may be responsible for 18F-NaF uptake in regions without visible calcium deposition. Objective 18Fsodium Fsodium 18F sodium F 18FNaF FNaF NaF (18F-NaF (MTC calcification detectable methods 1 positronemission positron emission PET/computed PETcomputed PET /computed computed CT (CT SUV. . (SUV) (HU Results 13 092 0 92 0.9 095 95 0.95 respectively 0.01. 001 0.01 01 0.01) 0.71 071 71 2 Conclusion (SUV 09 9 0. 00 0.0 0.7 07 7

ABSTRACT Objective: Pediatric cardiac tumors are rare and, among them, 90% are benign. Cardiac fibroma is the second most frequent tumor, after rhabdomyoma. The objective of this study is to report a case of cardiac fibroma diagnosed incidentally in a patient admitted with acute viral bronchiolitis. Case description: A 5-month-old male infant was admitted to the pediatric emergency department with acute viral bronchiolitis requiring hospitalization. He presented a detectable respiratory syncytial virus in oropharyngeal swab, blood test with lymphocytosis and a chest radiography revealed cardiomegaly. Further cardiologic testing was performed detecting elevation of cardiac biomarkers, an electrocardiogram with alteration of left ventricular repolarization and echocardiogram with a heterogeneous mass in the left ventricular, with areas of calcification. A chest angiotomography suggested rhabdomyosarcoma or cardiac fibroma and a magnetic resonance showed a mass, with characteristics suggesting fibroma. The final diagnosis was made after two cardiac catheterizations for biopsy of the lesion, confirming cardiac fibroma by anatomopathological examination. Because the patient had moderate to severe systolic dysfunction, he was submitted to heart transplant. Comments: One third of cardiac fibromas are asymptomatic, generally diagnosed late through tests ordered for other reasons. The gold-standard test for definitive diagnosis is biopsy. Cardiac fibroma usually does not present spontaneous regression and, in most cases, partial or total surgical resection is necessary. When tumors are unresectable, heart transplantation should be indicated. It is essential to have detailed characterization of the cardiac mass to establish the most appropriate therapeutic approach for each patient. Objective them 90 benign tumor rhabdomyoma description 5monthold monthold 5 month old hospitalization swab cardiomegaly biomarkers calcification lesion examination dysfunction transplant Comments asymptomatic reasons goldstandard gold standard cases necessary unresectable indicated 9

RESUMO Objetivo: Tumores cardíacos pediátricos são raros e, entre eles, 90% são benignos. O fibroma cardíaco é o segundo mais frequente, após o rabdomioma. O objetivo deste trabalho é relatar um caso de fibroma cardíaco, cujo diagnóstico foi incidental em um paciente internado por bronquiolite viral aguda. Descrição do caso: Lactente do sexo masculino com cinco meses foi atendido em um pronto atendimento pediátrico com quadro de bronquiolite viral aguda, necessitando de hospitalização. Em exames complementares, apresentou vírus sincicial respiratório detectável, hemograma com linfocitose, além de radiografia de tórax com cardiomegalia. Em investigação cardiológica, as enzimas cardíacas encontravam-se elevadas, o eletrocardiograma apresentava alteração de repolarização de parede lateral de ventrículo esquerdo e o ecocardiograma demonstrou massa heterogênea em ventrículo esquerdo, com áreas de calcificação. A angiotomografia de tórax sugeriu rabdomiossarcoma ou fibroma cardíaco e a ressonância magnética demonstrou massa cuja localização e características sugeriram fibroma. O diagnóstico foi conclusivo após dois cateterismos para biópsia da lesão, confirmando fibroma cardíaco pelo anatomopatológico. Em razão da disfunção sistólica moderada a grave, o paciente foi submetido a transplante cardíaco. Comentários: Um terço dos fibromas cardíacos é assintomático, geralmente diagnosticado tardiamente por meio de exames solicitados por outro motivo. O padrão-ouro para o diagnóstico definitivo é a biópsia. O fibroma cardíaco não costuma apresentar regressão espontânea, sendo submetido, na maioria dos casos, a ressecção cirúrgica parcial ou total. Nos tumores irressecáveis, o transplante cardíaco deve ser indicado. A caracterização detalhada da massa cardíaca é fundamental para traçar a conduta terapêutica mais adequada para cada paciente. Objetivo eles 90 benignos frequente rabdomioma aguda hospitalização complementares detectável linfocitose cardiomegalia cardiológica encontravamse encontravam se elevadas calcificação lesão anatomopatológico grave Comentários assintomático motivo padrãoouro padrão ouro espontânea casos total irressecáveis indicado 9

Abstract Background Bullous pilomatricoma is a rare variant of pilomatricoma. As it has been published in sporadic case reports, a limited understanding of its clinicopathological characteristics restricts its effective diagnosis and treatment. Objectives This study aimed to analyze the clinicopathological and immunohistochemical characteristics of bullous pilomatricoma to better understand the bullous transformation of pilomatricoma. Methods The authors conducted a retrospective study of 12 patients with bullous pilomatricoma and compared their clinical, histopathological, and immunohistochemical data with those of patients with ordinary pilomatricoma. Results Bullous pilomatricoma showed no sex preference, with a mean onset age of 31.2 years. The common sites were the upper extremities and trunk. Bullous pilomatricoma had a shorter disease duration, a larger diameter, and a greater tendency to increase in size than those of ordinary pilomatricoma. Histopathologically, bullous pilomatricoma had a shorter duration, lesser calcification, more mitotic figures, and distinct dermal features from those of ordinary pilomatricoma. Immunohistochemically, the expression of Matrix Metalloprotease (MMP)-2, MMP-9, vascular endothelial growth factor receptor-3 (VEGFR-3), and VEGF-C was elevated. Study limitations The study was retrospective, and the sample size was small. Conclusion The distinctive features of bullous pilomatricoma potentially result from dermal changes associated with the release of angiogenic factors and proteolytic enzymes. This comprehensive analysis provides novel insights into the clinical features and pathogenesis of bullous pilomatricoma. reports treatment 1 histopathological preference 312 31 2 31. years trunk duration diameter Histopathologically calcification figures Immunohistochemically MMP2, MMP2 MMP 2, (MMP)-2 MMP9, MMP9 9, 9 MMP-9 receptor3 receptor 3 receptor- VEGFR3, VEGFR3 VEGFR , (VEGFR-3) VEGFC VEGF C elevated small enzymes (MMP)- MMP- (VEGFR-3 (MMP) (VEGFR- (MMP (VEGFR

RESUMEN Se reportó un caso de ciervo rojo cautivo (Cervus elaphus) del Parque Zoológico Nacional de Cuba que presentaba adelgazamiento y cifosis con dificultades para caminar. En el cuartón donde se encontraba pastoreando había proliferado Cestrum diurnum, el cual ingirió durante un período aproximado de dos meses de sequía en el que además consumió poco forraje. El animal falleció y en la necropsia se encontraron como hallazgos más sobresalientes, mineralización de tejido en la aorta y las arterias carótidas y pulmonares, y calcificación de todo el parénquima pulmonar. Además, se observó atrofia serosa de la grasa coronaria del corazón y del tejido celular subcutáneo como señales de desnutrición. En este sentido, se concluye que la combinación de factores dados por la sequía intensa, la exposición abundante a Solanum glaucophyllum y el cuadro morfopatológico encontrado, se trataba de un caso de calcinosis enzoótica asociado al consumo de Cestrum diurnum.

ABSTRACT There was a report of a case of a captive red deer (Cervus elaphus) from the National Zoo of Cuba showing weight loss and kyphosis with walking difficulties. Cestrum diurnum had proliferated in the pasture where it was grazing and was ingested during a period of approximately two dry months, in which it also consumed little forage. The animal died, and at necropsy, the most outstanding findings were tissue mineralization of the aorta, carotid and pulmonary arteries, and calcification of the entire lung parenchyma. Additionally, a serous atrophy of the coronary heart fat and subcutaneous cellular tissue was observed as evidence of malnutrition. In this sense, it is concluded that the combination of factors given by the intense drought, the abundant exposure to Solanum glaucophyllum and the morphopathological picture found, represented a case of enzootic calcinosis associated with the consumption of Cestrum diurnum.

ABSTRACT Objective: This study was to investigate the role of serum Klotho, fetuin-A, and Matrix Gla Protein (MGP) in Coronary Artery Calcification (CAC) in patients with Maintenance Hemodialysis (MHD) and their predictive value for CAC. Methods: 100 patients receiving MHD were selected. Serum Klotho, fetuin-A, and MGP levels were detected by ELISA. CAC scores were assessed by coronary CT scan. Multifactor analysis was used to evaluate the risk factors affecting CAC. The ability of serum Klotho, fetuin-A, and MGP levels to diagnose CAC was evaluated by receiver operating characteristic curves. Results: Serum Klotho, fetuin-A, and MGP were independent risk factors for CAC. Serum Klotho, fetuin-A, and MGP were valuable in the diagnosis of CAC in MHD patients. Conclusion: There is a close relationship between Klotho, fetuin-A, and MGP levels in MHD patients and CAC. Objective Klotho fetuinA, fetuinA fetuin A, A fetuin-A (MGP (CAC (MHD Methods 10 selected ELISA scan curves Results Conclusion 1

Resumo Fundamento Apesar dos avanços nas modalidades de diagnóstico e tratamento, há necessidade de marcadores preditivos para acidente vascular cerebral (AVC) recorrentes. Objetivos Este estudo teve como objetivo investigar a relação entre calcificação do arco aórtico (CAA) e recorrência de AVC em pacientes com AVC durante o acompanhamento de um ano. Métodos Todos os pacientes com AVC que sofreram seu primeiro evento foram avaliados para participação no estudo. Foram registrados pacientes que sofreram AVC recorrentes durante o acompanhamento de um ano. A CAA foi avaliada por radiografia de tórax. Com base na ocorrência de AVC recorrente, os pacientes foram divididos em dois grupos. A CAA foi classificada em quatro categorias de acordo com o seu grau, e a presença de CAA foi incluída na análise estatística. A relação entre CAA e AVC recorrente foi avaliada por meio de uma curva característica de operação do receptor. Um nível de significância <0,05 foi considerado aceitável para todas as análises estatísticas. Resultados Um total de 203 pacientes foram incluídos no estudo (46,8% mulheres, média de idade 69±12,3). AVC recorrente foi detectado em 49 pacientes. CAA, hipertensão e fibrilação atrial foram mais frequentes em pacientes com AVC recorrente. Pacientes com AVC recorrente apresentaram menor taxa de filtração glomerular e maior largura de distribuição de glóbulos vermelhos (RDW). Na análise de regressão multivariada, CAA (hazard ratio [HR], 3,544; IC 95%:1,653-7,598, p=0,001) e RDW (HR,1,214; IC 95%:1,053-1,400, p=0,008) foram identificados como preditores independentes de AVC recorrente. Conclusão A presença de CAA (≥ grau 1) e RDW foram significativamente associadas ao desenvolvimento de AVC recorrente dentro de um ano. Esses achados podem ter significado prognóstico no acompanhamento de pacientes com AVC. tratamento (AVC (CAA ano tórax grupos estatística receptor 005 0 05 <0,0 estatísticas 20 46,8% 468 46 8 (46,8 mulheres 69±12,3. 69123 69±12,3 . 69 12 3 69±12,3) 4 RDW. (RDW) multivariada hazard HR, HR , [HR] 3,544 3544 544 95%1,6537,598, 9516537598 95% 1,653 7,598, 95 1 653 7 598 95%:1,653-7,598 p=0,001 p0001 p 001 HR,1,214 HR1214 214 (HR,1,214 95%1,0531,400, 9510531400 1,053 1,400, 053 400 95%:1,053-1,400 p=0,008 p0008 008 ≥ ( 00 <0, 2 46,8 (46, 6912 69±12, 6 (RDW [HR 3,54 354 54 6537 95%1,6537,598 951653759 1653 1,65 7598 7,598 9 65 59 95%:1,653-7,59 p=0,00 p000 HR,1,21 HR121 21 (HR,1,21 0531 95%1,0531,400 951053140 1053 1,05 1400 1,400 40 95%:1,053-1,40 <0 46, (46 691 69±12 3,5 35 5 95%1,6537,59 95165375 165 1,6 759 7,59 95%:1,653-7,5 p=0,0 p00 HR,1,2 HR12 (HR,1,2 95%1,0531,40 95105314 105 1,0 140 1,40 95%:1,053-1,4 < (4 69±1 3, 95%1,6537,5 9516537 16 1, 75 7,5 95%:1,653-7, p=0, p0 HR,1, HR1 (HR,1, 95%1,0531,4 9510531 10 14 1,4 95%:1,053-1, 69± 95%1,6537, 951653 7, 95%:1,653-7 p=0 HR,1 (HR,1 95%1,0531, 951053 95%:1,053-1 95%1,6537 95165 95%:1,653- p= (HR, 95%1,0531 95105 95%:1,053- 95%1,653 9516 95%:1,653 (HR 95%1,053 9510 95%:1,053 95%1,65 951 95%:1,65 95%1,05 95%:1,05 95%1,6 95%:1,6 95%1,0 95%:1,0 95%1, 95%:1, 95%1 95%:1 95%:

Abstract Background Despite advances in diagnostic and treatment modalities, there is a need for predictive markers for recurrent strokes. Objectives This study aimed to investigate the relationship between aortic arch calcification (AAC) and stroke recurrence in stroke patients during a one-year follow-up. Methods All stroke patients who experienced their first event were evaluated for participation in the study. Patients who experienced recurrent strokes during the one-year follow-up were recorded. AAC was assessed by chest radiography. Based on the occurrence of recurrent strokes the patients were divided into two groups. AAC was classified into four categories according to its degree, and the presence of AAC was included in the statistical analysis. The relationship between AAC and recurrent stroke was assessed using a receiver operating characteristic curve. A significance level of <0.05 was deemed acceptable for all statistical analyses. Results A total of 203 patients were included in the study (46.8% female, mean age 69±12.3). Recurrent stroke was detected in 49 patients. AAC, hypertension, and atrial fibrillation were more frequent in patients with recurrent stroke. Patients with recurrent stroke had a lower glomerular filtration rate and a higher red cell distribution width (RDW). In multivariate regression analysis, AAC (hazard ratio [HR], 3.544; 95% CI:1.653-7.598, p=0.001) and RDW (HR,1.214; 95% CI:1.053-1.400, p=0.008) were identified as independent predictors of recurrent stroke. Conclusion The presence of AAC (≥ grade 1) and RDW were found to be significantly associated with the development of recurrent stroke within one year. These findings may have prognostic significance in the follow-up of stroke patients. modalities (AAC oneyear year followup. followup follow up. up recorded radiography groups degree analysis curve 005 0 05 <0.0 analyses 20 46.8% 468 46 8 (46.8 female 69±12.3. 69123 69±12.3 . 69 12 3 69±12.3) 4 hypertension RDW. (RDW) hazard HR, HR , [HR] 3.544 3544 544 95 CI1.6537.598, CI16537598 CI 1.653 7.598, 1 653 7 598 CI:1.653-7.598 p=0.001 p0001 p 001 HR,1.214 HR1214 214 (HR,1.214 CI1.0531.400, CI10531400 1.053 1.400, 053 400 CI:1.053-1.400 p=0.008 p0008 008 ≥ ( 00 <0. 2 46.8 (46. 6912 69±12. 6 (RDW [HR 3.54 354 54 9 CI1 6537 CI1.6537.598 CI1653759 1653 1.65 7598 7.598 65 59 CI:1.653-7.59 p=0.00 p000 HR,1.21 HR121 21 (HR,1.21 0531 CI1.0531.400 CI1053140 1053 1.05 1400 1.400 40 CI:1.053-1.40 <0 46. (46 691 69±12 3.5 35 5 CI1.6537.59 CI165375 165 1.6 759 7.59 CI:1.653-7.5 p=0.0 p00 HR,1.2 HR12 (HR,1.2 CI1.0531.40 CI105314 105 1.0 140 1.40 CI:1.053-1.4 < (4 69±1 3. CI1.6537.5 CI16537 16 1. 75 7.5 CI:1.653-7. p=0. p0 HR,1. HR1 (HR,1. CI1.0531.4 CI10531 10 14 1.4 CI:1.053-1. 69± CI1.6537. CI1653 7. CI:1.653-7 p=0 HR,1 (HR,1 CI1.0531. CI1053 CI:1.053-1 CI1.6537 CI165 CI:1.653- p= (HR, CI1.0531 CI105 CI:1.053- CI1.653 CI16 CI:1.653 (HR CI1.053 CI10 CI:1.053 CI1.65 CI:1.65 CI1.05 CI:1.05 CI1.6 CI:1.6 CI1.0 CI:1.0 CI1. CI:1. CI:1 CI: