ABSTRACT Mantle cell lymphoma of the ocular and periorbital regions is extremely rare but should be considered in the differential diagnosis of lesions affecting the periorbital tissues. In this study, we present a rare case of mantle cell lymphoma of the lacrimal sac in a 65-year-old male presenting with a mass in the lacrimal sac region and epiphora. After clinical examinations and imaging studies, the mucocele was misdiagnosed. Considering the unexpected findings during external dacryocystorhinostomy, a frozen biopsy was performed, which confirmed the diagnosis of lymphoma. tissues study 65yearold yearold 65 year old epiphora studies misdiagnosed dacryocystorhinostomy performed 6

ABSTRACT Purpose: To describe the epidemiological and clinical profile of hospitalized patients with retinoblastoma in Brazil. Methods: Using data from the Hospital Cancer Registry of the Instituto Nacional de Câncer, patients with the morphological codes of retinoblastoma who were diagnosed between 2000 to 2018, aged 0–19 years, and followed up in registered hospitals (analytical cases) were selected. The relative and absolute frequencies of demographic, clinical, diagnostic, therapeutic, and outcome variables were described. Hospital performance indicators were calculated and compared between hospitals qualified and not qualified to treat pediatric oncology cases and between hospitals with different case volumes (<20, 20-75, >75 cases). Results: Of the 2,269 identified analytical cases from 86 institutions, 48% were from the Southeast, 54% were male, and 66% were aged <4 years. The proportion of missing data (NA) was too high for several variables. Approximately 84% of the patients were from the public health system, 40% had a positive family history, and 88% had unilateral involvement. The first treatment included surgery in 58.3% of the patients (NA=2), Approximately 36.6% of these patients achieved complete remission, 10.8% achieved partial remission, and 12.7% died (NA=59%). Hospital performance indicators were within the target in >90% of the patients. The median time between the first appointment and diagnosis (6 days, interquartile range [IQR] 1–14) was significantly lower and the median time to death was longer (343 days, IQR, 212-539) in high-volume hospitals (>75 cases) than in medium- and low-volume hospitals. Conclusions: Despite the high proportion of missing data, we found that the delay in diagnosis is due to prehospital factors. Additionally, there is a need for educational programs for healthcare professionals and families that emphasize early identification and referral to specialized centers. Future studies should focus on the impact of Hospital Cancer Registry data completeness on outcomes, causes of delay in diagnosis, regional inequalities, and barriers to accessing specialized services. Purpose Brazil Methods Câncer 200 2018 019 0 19 0–1 years selected demographic diagnostic therapeutic described <20, 20 (<20 2075, 2075 75, 75 20-75 >7 cases. . Results 2269 2 269 2,26 8 institutions 48 Southeast 54 male 66 4 < NA (NA 84 system 40 history 88 involvement 583 58 3 58.3 NA=2, NA2 NA=2 , (NA=2) 366 36 6 36.6 remission 108 10 10.8 127 12 7 12.7 NA=59%. NA59 NA=59% 59 (NA=59%) 90 >90 ( days IQR [IQR 1–14 114 1 14 343 (34 212539 212 539 212-539 highvolume volume (>7 medium lowvolume low Conclusions factors Additionally centers outcomes inequalities services 201 01 0– <20 (<2 207 20-7 > 226 26 2,2 5 58. NA= (NA=2 36. 10. 12. NA5 NA=59 (NA=59% 9 >9 1–1 11 34 (3 21253 21 53 212-53 (> <2 (< 20- 22 2, (NA= NA=5 (NA=59 1– 2125 212-5 (NA=5 212-

ABSTRACT Purpose: To determine the clinical outcomes in patients after type 1 Boston keratoprosthesis surgery and the significance of ultrasound biomicroscopy imaging for postoperative follow-up. Methods: This retrospective analysis included 20 eyes of 19 patients who underwent corneal transplantation with type 1 Boston keratoprosthesis between April 2014 and December 2021. Data on patient demographics, preoperative diagnosis, visual acuity, and postoperative clinical findings were analyzed. Results: Type 1 Boston keratoprosthesis implantation resulted in intermediate- and long-term positive outcomes. However, blindness and other serious complications such as glaucoma, retroprosthetic membrane formation, endophthalmitis, or retinal detachment also occurred. The use of ultrasound biomicroscopy imaging allowed for better evaluation of the back of the titanium plate, anterior segment structures, and the relationship of the prosthesis with surrounding tissues, which provided valuable postoperative information. Conclusion: Regular lifetime monitoring and treatment are necessary in patients who undergo Boston type 1 keratoprosthesis implantation for high-risk corneal transplantation. ultrasound biomicroscopy imaging can be a valuable imaging technique for the evaluation of patients with Boston type 1 keratoprosthesis, providing important information on anterior segment anatomy and potential complications. Further studies and consensus on postoperative follow-up protocols are required to optimize the management of patients with Boston type 1 keratoprosthesis. Purpose followup. followup follow up. up Methods 2 201 2021 demographics diagnosis acuity analyzed Results intermediate longterm long term However glaucoma formation endophthalmitis occurred plate structures tissues Conclusion highrisk high risk 202

ABSTRACT A young woman presented at our clinic with sudden visual loss in the right eye, recurrent vertigo, and right-sided tinnitus. We performed a complete ophthalmological evaluation. This revealed effects of the condition on the small arterioles of the peripheral retina. Susac syndrome is characterized by the clinical triad of retinal arteriolar occlusions, cochleovestibular manifestations, and encephalopathy (which can be identified by neuroimaging abnormalities). Early diagnosis and immunosuppressive therapy improved the patient's visual acuity and the remission of her other symptoms. Hemi-central retinal artery occlusion is an atypical neuro-ophthalmological finding in this disease. However, its identification as a sign of Susac syndrome may facilitate timely diagnosis and accurate treatment. eye vertigo rightsided sided tinnitus evaluation retina occlusions manifestations which abnormalities. abnormalities . abnormalities) patients patient s symptoms Hemicentral Hemi central neuroophthalmological neuro disease However treatment

ABSTRACT: This report described the use of acoustic radiation force impulse (ARFI) elastography in the diagnosis of two cases of canine malignant peripheral nerve sheath tumors. Both patients presented with lameness in the thoracic limb and no response to previous clinical treatment or trauma history. Physical examination revealed muscular atrophy in one of the thoracic limbs, in both dogs. B-mode axillary ultrasound showed the presence of a predominantly hypoechogenic, heterogeneous, irregular, nonencapsulated nodule with adjacent reactivity, measuring approximately 20.1 mm x 15.4 mm in the first case and 18.3 mm x 10.7 mm in the second. ARFI elastography was performed, showing areas of significant stiffness, with an average shear wave velocity of 4.12 m/s (case 1) and 4.35 m/s (case 2), suggesting malignancy. In both cases, the affected limb was amputated, and the tumors sent for histopathological analysis, which were; subsequently, diagnosed as malignant tumors of the peripheral nerve sheath. The ultrasonographic methods used were essential in the diagnosis and therapeutic conduct. ABSTRACT (ARFI history limbs dogs Bmode B mode hypoechogenic heterogeneous irregular reactivity 201 20 1 20. 154 15 4 15. 183 18 3 18. 107 10 7 10. second performed stiffness 412 12 4.1 ms m s 435 35 4.3 2, 2 , 2) malignancy amputated analysis subsequently conduct 41 4. 43

RESUMO: O objetivo deste relato é descrever o auxílio da elastografia por impulso de força de radiação acústica (ARFI) no diagnóstico de dois casos de tumores malignos da bainha dos nervos periféricos em canídeos. Ambos os pacientes apresentavam claudicação em membro torácico e já haviam sido tratados clinicamente por outros profissionais, sem resposta ao tratamento ou histórico de trauma. Ao exame físico, foi observada atrofia muscular em apenas um dos membros torácicos, nos dois casos. Foi realizado exame ultrassonográfico axilar. Na avaliação modo B, foi observada a presença de estrutura nodular, predominantemente hipoecogênica, heterogênea, irregular, não encapsulada e com reatividade adjacente, medindo aproximadamente 20.1 mm x 15.4 mm no primeiro caso e 18.3 mm x 10.7 mm no segundo caso. Foi realizada elastografia ARFI, demonstrando a presença de áreas de maior rigidez, com velocidade de ondas de cisalhamento média de 4.12 m/s (caso 1) e 4.35 m/s (caso 2), sugerindo malignidade. Em ambos os casos, foi realizada amputação do membro afetado e os nódulos removidos foram encaminhados para análise histopatológica, na qual se obteve o diagnóstico de tumor maligno da bainha de nervo periférico. Os métodos ultrassonográficos realizados nesses casos foram essenciais para o diagnóstico e conduta terapêutica. RESUMO ARFI (ARFI canídeos profissionais trauma físico torácicos axilar B nodular hipoecogênica heterogênea irregular adjacente 201 20 1 20. 154 15 4 15. 183 18 3 18. 107 10 7 10. rigidez 412 12 4.1 ms m s 435 35 4.3 2, 2 , 2) malignidade histopatológica periférico terapêutica 41 4. 43

Resumen: El síndrome carcinoide es un síndrome paraneoplásico que se presenta en tumores neuroendocrinos. Aunque es una entidad infrecuente suele ser la primera manifestación de la enfermedad. La baja incidencia junto a la presentación inespecífica genera retrasos diagnósticos importantes. Se presenta el caso de una paciente con síntomas digestivos y tuforadas que posteriormente agrega insuficiencia cardíaca, logrando mediante un ecocardiograma típico y marcadores analíticos el diagnóstico de síndrome carcinoide. Posteriormente se evidencia que su origen en un tumor neuroendocrino bronquial. Conocer las características de este síndrome es fundamental para mantener una alta sospecha clínica en pacientes con síntomas sugestivos logrando un diagnóstico precoz y adecuado.

Abstract: Carcinoid syndrome is a paraneoplastic syndrome that occurs in neuroendocrine tumors. Although It is an uncommon entity, it is usually the first manifestation of the disease. The low incidence besides the non-specific presentation generates important diagnostic delays. We present the case of a patient presenting digestive symptoms and flushing that subsequently adds heart failure, achieving though a typical echocardiogram and analytical markers the diagnosis of carcinoid syndrome. Later it is discovered its origin in a bronchial neuroendocrine tumor. Knowing the characteristics of this syndrome is essential to maintain a high clinical suspicion in patients with suggestive symptoms, in order to achieve an early and adequate diagnosis.

Resumo: El síndrome carcinoide é um síndrome paraneoplásico que ocorre em tumores neuroendócrinos. Embora seja uma entidade rara, geralmente é a primeira manifestação da doença. A baixa incidência, juntamente com a apresentação inespecífica, resulta em atrasos importantes no diagnóstico. Apresentamos o caso de uma paciente com sintomas digestivos e ruborização cutânea, que posteriormente desenvolve insuficiência cardíaca. O diagnóstico de síndrome carcinoide foi estabelecido por meio de um ecocardiograma característico e marcadores analíticos. Posteriormente, foi evidenciada a origem em um tumor neuroendócrino brônquico. Conhecer as características deste síndrome é fundamental para manter uma alta suspeita clínica em pacientes com sintomas sugestivos, permitindo um diagnóstico precoce e adequado.

Resumen: La vasculitis reumatoidea es una complicación sistémica y poco frecuente de la Artritis Reumatoidea. Si bien su incidencia ha descendido en los últimos años con el advenimiento de las nuevas terapias inmunosupresoras y biológicas, continua teniendo una alta morbimortalidad. Predomina en el sexo masculino, en pacientes seropositivos y con un largo período de la enfermedad establecida. Requiere de alta presunción diagnostica, siendo el compromiso cutáneo y nervioso periférico el más frecuente. La biopsia de nervio o piel es requerida habitualmente para su diagnóstico. El tratamiento se basa en corticoides e inmunosupresores. Presentamos tres casos clínicos y realizamos una revisión de la literatura.

Abstract: Rheumatoid vasculitis is a rare systemic complication of rheumatoid arthritis. Although its incidence has decreased in recent years with the advent of new immunosuppressive and biological therapies, it continues to have a high morbidity and mortality. It predominates in males, in seropositive patients and with a long period of established disease. It requires high diagnostic presumption, with skin and peripheral nervous involvement being the most affected. Nerve or skin biopsy is usually required for diagnosis. Treatment is based on corticosteroids and immunosuppressants. We present three clinical cases and carry out a review of the literature.

Resumo: A vasculite reumatóide é uma complicação sistêmica rara da artrite reumatóide. Embora sua incidência tenha diminuído nos últimos anos com o advento de novas terapias imunossupressoras e biológicas, continua apresentando elevada morbidade e mortalidade. Predomina no sexo masculino, em pacientes soropositivos e com longo período de doença estabelecida. Exige alta presunção diagnóstica, sendo o envolvimento cutâneo e nervoso periférico os mais afetados. A biópsia de nervo ou pele geralmente é necessária para o diagnóstico. O tratamento é baseado em corticosteroides e imunossupressores. Apresentamos três casos clínicos e realizamos uma revisão da literatura.

Abstract Introduction: The COVID-19 pandemic has had an important impact on the training of nursing professionals, affecting the mental health of students due to the experiences they have faced. Objective: Assess the level of academic stress in nursing students and its relationship to anxiety, depression, insomnia, post-traumatic stress disorder, and experiences during the COVID-19 pandemic. Methodology: Correlational study with 1009 nursing students who agreed to participate. A virtual survey was applied, collecting sociodemographic and COVID-19 Pandemic experiences data, in addition to questionnaires on anxiety, depression, insomnia, and post-traumatic and academic stress, with prior authorization from the research and ethics committee. Statistical analysis such as Square Chi, Spearman's Rho and logistic regression model were used. Results: 68.1 % presented anxiety, 64.3 % depression, 56.3 % insomnia and 85.7 % academic stress. Academic stress showed statistical association with sex, school period, diagnosis in a family member and contact with a person suspected or confirmed of having COVID-19. Presenting academic stress is 3.9 times higher with moderate anxiety, 10.6 times higher with moderate depression, 12.7 times higher with moderate clinical insomnia, 1.8 times higher with a family member diagnosed with the disease, and 2.6 times higher with contact of suspected or confirmed COVID-19 cases. Conclusions: Mental health problems were related to academic stress levels in nursing students during the COVID-19 pandemic. The nursing professional must design educational and training strategies to reduce the levels of these problems, applicable from educational training to the workplace.

Abstrato Introdução: A Pandemia do COVID-19 teve um impacto significativo na formação dos profissionais de enfermagem, afetando a saúde mental dos estudantes devido às vivências por eles enfrentadas. Objetivo: Avaliar o nível de estresse acadêmico em estudantes de enfermagem e sua relação com ansiedade, depressão, insônia, transtorno de estresse pós-traumático e experiências durante a pandemia de COVID-19. Metodologia: Estudo correlacional com 1009 graduandos de enfermagem que concordaram em participar. Foi aplicada uma pesquisa virtual, coletando dados sociodemográficos e experiências da Pandemia da COVID-19, além de questionários sobre ansiedade, depressão, insônia e estresse pós-traumático e acadêmico, com autorização prévia do comitê de ética e pesquisa. Foram utilizadas análises estatísticas como Qui-cuadrado, Rho de Spearman e modelo de regressão logística. Resultados: 68.1 % presented anxiety, 64.3 % depression, 56.3 % insomnia and 85.7 % academic stress. Academic stress showed statistical association with sex, school period, diagnosis in a family member and contact with a person suspected or confirmed of having COVID-19. Presenting academic stress is 3.9 times higher with moderate anxiety, 10.6 times higher with moderate depression, 12.7 times higher with moderate clinical insomnia, 1.8 times higher with a family member diagnosed with the disease, and 2.6 times higher with contact of suspected or confirmed COVID-19 cases. Conclusões: Problemas de saúde mental foram relacionados aos níveis de estresse acadêmico em estudantes de enfermagem durante a pandemia de COVID-19. O profissional de enfermagem deve traçar estratégias educacionais e de treinamento para reduzir os níveis desses problemas, aplicáveis desde a formação educacional até o ambiente de trabalho.

Resumen Introducción: La pandemia por COVID-19 ha generado un impacto importante en la formación de profesionales de enfermería, afectando la salud mental en estudiantes debido a las experiencias enfrentadas. Objetivo: Evaluar el nivel de estrés académico en estudiantes de enfermería y su relación con la ansiedad, depresión, insomnio, estrés postraumático y experiencias durante la pandemia de COVID-19. Metodología: Estudio correlacional con 1009 estudiantes matriculados de licenciatura en enfermería que aceptaron participar. Se aplicó encuesta virtual, recolectando datos sociodemográficos y de experiencias durante la pandemia de COVID-19, además de los cuestionarios sobre ansiedad, depresión, insomnio, estrés postraumático y académico, con previa autorización del comité de investigación y ética. El análisis se realizó con Ji cuadrada, Rho de Spearman, y el modelo de regresión logística. Resultados: El 68.1 % presentaron ansiedad, el 64.3 % depresión, el 56.3 % insomnio y el 85.7 % estrés académico. El estrés académico mostró asociación estadística con sexo, periodo académico, diagnóstico en familiar y contacto con persona sospechosa/confirmada de COVID-19. Presentar estrés académico es 3.9 veces mayor con ansiedad moderada, 10.6 veces mayor con depresión moderada, 12.7 veces mayor con insomnio clínico moderado, 1.8 veces mayor con familiar diagnosticado con la enfermedad y 2.6 veces mayor con contacto de casos sospechosos/confirmados de COVID-19. Conclusión: Problemas de salud mental mostraron relación estadística con estrés académico en estudiantes de enfermería durante la pandemia por COVID-19. El profesional de enfermería debe diseñar estrategias educativas y de capacitación para disminuir los niveles de estos problemas, aplicables desde la formación hasta lo laboral.

Abstract The temporomandibular joint (TMJ) is a mobile synovial joint that articulates the temporal bone, particularly the articular tubercle and the glenoid fossa, with the condyle of the mandibular bone. Inside it, there is an articular disc that divides the cavity into two compartments, which act as a functional unit. To correctly evaluate the status of the TMJ, it is necessary to know its normal anatomy and function. In addition, one must be familiar with the imaging findings present in magnetic resonance imaging (MRI), which must be correlated with the physical examination and clinical symptoms, to reach an accurate diagnosis. Temporomandibular disorders (TMD) are a heterogeneous set of pathologies that involve the TMJ complex and adjacent bone and muscular structures. MRI is considered the gold-standard imaging technique to evaluate TMD. This technique provides information on the anatomical and functional characteristics, in addition to adequately characterizing the different pathological processes and the response to treatment.

Resumen La articulación temporomandibular (ATM) es una articulación sinovial móvil que articula el hueso temporal, particularmente el tubérculo articular y la fosa glenoidea, con el cóndilo del hueso mandibular. En su interior existe un disco articular que divide la cavidad en dos compartimentos, los cuales actúan como una unidad funcional. Para evaluar correctamente el estado de la ATM es necesario conocer su anatomía normal y funcionamiento. Además, se debe estar familiarizado con los hallazgos imagenológicos presentes en la resonancia magnética (RM), los cuales deben ser correlacionados con el examen físico y la clínica, para así llegar a un diagnóstico certero. Los trastornos temporomandibulares (TTM) son un conjunto heterogéneo de patologías que involucran al complejo de la ATM y las estructuras óseas y musculares adyacentes. La RM se considera la técnica imagenológica de preferencia para evaluar los TTM. Esta proporciona información sobre las características anatómicas y funcionales, además de caracterizar adecuadamente los diferentes procesos patológicos y la respuesta al tratamiento.

RESUMO Introdução: Doenças pulmonares são comuns em pacientes com doença renal em estágio terminal (DRET), dificultando o diagnóstico diferencial com COVID-19. Este estudo descreve achados de tomografia computadorizada de tórax (TC) em pacientes com DRET em terapia renal substitutiva (TRS) hospitalizados com suspeita de COVID-19. Métodos: Indivíduos maiores de 18 anos com DRET, encaminhados ao pronto-socorro com suspeita de COVID-19 foram incluídos. Dados clínicos e epidemiológicos foram extraídos de registros eletrônicos de saúde. A TC foi classificada como típica, indeterminada, atípica, negativa. Comparamos achados tomográficos de pacientes com COVID-19 positivos e negativos. Resultados: Recrutamos 109 pacientes (62,3% COVID-19-positivos) entre março e dezembro de 2020, idade média de 60 ± 12,5 anos, 43% mulheres. A etiologia mais comum da DRET foi diabetes. Tempo médio em diálise foi 36 meses, intervalo interquartil = 12–84. A lesão pulmonar mais comum foi opacidades em vidro fosco. O padrão típico de TC foi mais comum em pacientes com COVID-19 (40 (61%) vs. 0 (0%) em pacientes sem COVID-19, p < 0,001). Sensibilidade 60,61% (40/66), especificidade 100% (40/40). Valores preditivos positivos e negativos foram 100% e 62,3%, respectivamente. Padrão atípico de TC foi mais frequente em pacientes COVID-19-negativos (9 (14%) vs. 24 (56%) em COVID-19-positivos, p < 0,001), enquanto padrão indeterminado foi semelhante em ambos os grupos (13 (20%) vs. 6 (14%), p = 0,606), e padrão negativo foi mais comum em pacientes COVID-19-negativos (4 (6%) vs. 12 (28%), p = 0,002). Conclusões: Em pacientes com DRET em TRS hospitalizados, um padrão atípico de TC de tórax não pode excluir adequadamente o diagnóstico de COVID-19. Introdução , (DRET) COVID19. COVID19 COVID 19. 19 (TC (TRS Métodos 1 prontosocorro pronto socorro COVID-1 incluídos saúde típica indeterminada atípica negativa Resultados 10 62,3% 623 62 3 (62,3 COVID19positivos COVIDpositivos COVID-19-positivos 2020 125 5 12, 43 mulheres diabetes meses 1284 84 12–84 fosco 40 61% 61 (61% vs 0% (0% COVID19, 19, 0,001. 0001 0,001 . 001 0,001) 6061 60,61 40/66, 4066 40/66 66 (40/66) 100 40/40. 4040 40/40 (40/40) respectivamente COVID19negativos COVIDnegativos 9 ( 14% 14 (14% 2 56% 56 (56% COVID19positivos, positivos, 0,001, 13 (1 20% 20 (20% 14%, 0,606, 0606 0,606 606 0,606) 4 6% (6% 28%, 28 28% (28%) 0,002. 0002 0,002 002 0,002) Conclusões (DRET COVID1 COVID- 62,3 (62, 202 128 8 12–8 (61 (0 000 0,00 00 60,6 406 40/6 (40/66 404 40/4 (40/40 (14 (56 (20 060 0,60 (6 (28% 62, (62 12– 0,0 60, 40/ (40/6 (40/4 (5 (2 06 0,6 (28 0, (40/

ABSTRACT Introduction: Lung diseases are common in patients with end stage kidney disease (ESKD), making differential diagnosis with COVID-19 a challenge. This study describes pulmonary chest tomography (CT) findings in hospitalized ESKD patients on renal replacement therapy (RRT) with clinical suspicion of COVID-19. Methods: ESKD individuals referred to emergency department older than 18 years with clinical suspicion of COVID-19 were recruited. Epidemiological baseline clinical information was extracted from electronic health records. Pulmonary CT was classified as typical, indeterminate, atypical or negative. We then compared the CT findings of positive and negative COVID-19 patients. Results: We recruited 109 patients (62.3% COVID-19-positive) between March and December 2020, mean age 60 ± 12.5 years, 43% female. The most common etiology of ESKD was diabetes. Median time on dialysis was 36 months, interquartile range = 12–84. The most common pulmonary lesion on CT was ground glass opacities. Typical CT pattern was more common in COVID-19 patients (40 (61%) vs 0 (0%) in non-COVID-19 patients, p < 0.001). Sensitivity was 60.61% (40/66) and specificity was 100% (40/40). Positive predictive value and negative predictive value were 100% and 62.3%, respectively. Atypical CT pattern was more frequent in COVID-19-negative patients (9 (14%) vs 24 (56%) in COVID-19-positive, p < 0.001), while the indeterminate pattern was similar in both groups (13 (20%) vs 6 (14%), p = 0.606), and negative pattern was more common in COVID-19-negative patients (4 (6%) vs 12 (28%), p = 0.002). Conclusions: In hospitalized ESKD patients on RRT, atypical chest CT pattern cannot adequately rule out the diagnosis of COVID-19. Introduction ESKD, , (ESKD) COVID19 COVID 19 COVID-1 challenge (CT RRT (RRT COVID19. 19. Methods 1 records typical Results 10 62.3% 623 62 3 (62.3 COVID19positive COVIDpositive COVID-19-positive 2020 125 5 12. 43 female diabetes months 1284 84 12–84 opacities 40 61% 61 (61% 0% (0% nonCOVID19 nonCOVID non non-COVID-1 0.001. 0001 0.001 . 001 0.001) 6061 60.61 40/66 4066 66 (40/66 100 40/40. 4040 40/40 (40/40) respectively COVID19negative COVIDnegative 9 ( 14% 14 (14% 2 56% 56 (56% COVID19positive, positive, 0.001, 13 (1 20% 20 (20% 14%, 0.606, 0606 0.606 606 0.606) 4 6% (6% 28%, 28 28% (28%) 0.002. 0002 0.002 002 0.002) Conclusions (ESKD COVID1 COVID- 62.3 (62. 202 128 8 12–8 (61 (0 nonCOVID1 non-COVID- 000 0.00 00 60.6 40/6 406 (40/6 404 40/4 (40/40 (14 (56 (20 060 0.60 (6 (28% 62. (62 12– non-COVID 0.0 60. 40/ (40/ (40/4 (5 (2 06 0.6 (28 0.

RESUMO Introdução: A biópsia renal (BR) percutânea é fundamental para diagnóstico e manejo de diversas patologias renais. Dados nacionais sobre BR nativa em pacientes pediátricos são escassos. Nosso objetivo foi revisar características demográficas, clínicas e padrões histopatológicos em crianças submetidas a BR percutânea nativa ao longo de 24 anos. Métodos: Estudo observacional retrospectivo de pacientes submetidos a BR percutâneas nativas em unidade de nefrologia pediátrica entre 1998 e 2021, comparando três períodos: período 1 (1998–2005), período 2 (2006–2013), período 3 (2014–2021). Resultados: Constatamos que foram realizadas 228 BR, 78 (34,2%) no período 1, 91 (39,9%) no período 2, 59 (25,9%) no período 3. A idade mediana na BR foi 11 (7–14) anos. As principais indicações para BR foram síndrome nefrótica (SN) (42,9%), hematúria e/ou proteinúria não nefrótica (35,5%), lesão renal aguda (13,2%). Glomerulopatias primárias foram mais frequentes (67,1%), principalmente doença de lesão mínima (DLM) (25,4%), nefropatia por IgA (12,7%), glomerulonefrite mesangioproliferativa (GN) (8,8%). Das glomerulopatias secundárias, nefrite lúpica (NL) foi a mais prevalente (11,8%). No grupo 1, hematúria e/ou a proteinúria não nefrótica foram os principais motivos para BR, ao contrário da SN nos grupos 2 e 3 (p < 0,01). A NL apresentou tendência crescente (período 1–3: 2,6%–5,3%) e a glomeruloesclerose segmentar focal (GESF) apresentou leve tendência decrescente (período 1–3: 3,1%–1,8%), sem significância estatística. Conclusões: A principal indicação para BR foi SN, que aumentou ao longo do tempo, justificando o achado de DLM como principal diagnóstico histológico. A NL apresentou aumento na incidência ao longo do tempo, enquanto os casos de GESF não aumentaram. Introdução (BR renais escassos demográficas anos Métodos 199 2021 períodos 1998–2005, 19982005 1998–2005 , 2005 (1998–2005) 2006–2013, 20062013 2006–2013 2006 2013 (2006–2013) 2014–2021. 20142021 2014–2021 . 2014 (2014–2021) Resultados 22 7 34,2% 342 34 (34,2% 9 39,9% 399 39 (39,9% 5 25,9% 259 25 (25,9% 7–14 714 14 (7–14 (SN 42,9%, 429 42,9% 42 (42,9%) eou ou 35,5%, 355 35,5% 35 (35,5%) 13,2%. 132 13,2% 13 (13,2%) 67,1%, 671 67,1% 67 (67,1%) (DLM 25,4%, 254 25,4% 4 (25,4%) 12,7%, 127 12,7% 12 (12,7%) GN (GN 8,8%. 88 8,8% 8 (8,8%) secundárias (NL 11,8%. 118 11,8% (11,8%) p 0,01. 001 0,01 0 01 0,01) 1–3 2,6%–5,3% 2653 6 (GESF 3,1%–1,8%, 3118 3,1%–1,8% 3,1%–1,8%) estatística Conclusões tempo histológico aumentaram 19 202 1998200 1998–200 200 (1998–2005 2006201 2006–201 201 (2006–2013 2014202 2014–202 (2014–2021 34,2 (34,2 39,9 (39,9 25,9 (25,9 7–1 71 (7–1 42,9 (42,9% 35,5 (35,5% 13,2 (13,2% 67,1 (67,1% 25,4 (25,4% 12,7 (12,7% 8,8 (8,8% 11,8 (11,8% 00 0,0 1– 2,6%–5,3 265 311 3,1%–1,8 20 199820 1998–20 (1998–200 200620 2006–20 (2006–201 201420 2014–20 (2014–202 34, (34, 39, (39, 25, (25, 7– (7– 42, (42,9 35, (35,5 13, (13,2 67, (67,1 (25,4 12, (12,7 8, (8,8 11, (11,8 0, 2,6%–5, 26 31 3,1%–1, 19982 1998–2 (1998–20 20062 2006–2 (2006–20 20142 2014–2 (2014–20 (34 (39 (25 (7 (42, (35, (13, (67, (12, (8, (11, 2,6%–5 3,1%–1 1998– (1998–2 2006– (2006–2 2014– (2014–2 (3 (2 ( (42 (35 (13 (67 (12 (8 (11 2,6%– 3,1%– (1998– (2006– (2014– (4 (1 (6 2,6% 3,1% (1998 (2006 (2014 2,6 3,1 (199 (200 (201 3, (19 (20

Introduction: Percutaneous kidney biopsy (KB) is crucial to the diagnosis and management of several renal pathologies. National data on native KB in pediatric patients are scarce. We aimed to review the demographic and clinical characteristics and histopathological patterns in children who underwent native percutaneous KB over 24 years. Methods: Retrospective observational study of patients undergoing native percutaneous KB in a pediatric nephrology unit between 1998 and 2021, comparing 3 periods: period 1 (1998–2005), period 2 (2006–2013), and period 3 (2014–2021). Results: We found that 228 KB were performed, 78 (34.2%) in period 1, 91 (39.9%) in period 2, and 59 (25.9%) in period 3. The median age at KB was 11 (7–14) years. The main indications for KB were nephrotic syndrome (NS) (42.9%), hematuria and/or non-nephrotic proteinuria (35.5%), and acute kidney injury (13.2%). Primary glomerulopathies were more frequent (67.1%), particularly minimal change disease (MCD) (25.4%), IgA nephropathy (12.7%), and mesangioproliferative glomerulonephritis (GN) (8.8%). Of the secondary glomerulopathies, lupus nephritis (LN) was the most prevalent (11.8%). In group 1, hematuria and/or non-nephrotic proteinuria were the main reasons for KB, as opposed to NS in groups 2 and 3 (p < 0.01). LN showed an increasing trend (period 1–3: 2.6%–5.3%) and focal segmental glomerular sclerosis (FSGS) showed a slight decreasing trend (period 1–3: 3.1%–1.8%), without statistical significance. Conclusions: The main indication for KB was NS, which increased over time, justifying the finding of MCD as main histological diagnosis. LN showed an increase in incidence over time, while FSGS cases did not increase. Introduction (KB pathologies scarce years Methods 199 2021 periods 1998–2005, 19982005 1998–2005 , 2005 (1998–2005) 2006–2013, 20062013 2006–2013 2006 2013 (2006–2013) 2014–2021. 20142021 2014–2021 . 2014 (2014–2021) Results 22 performed 7 34.2% 342 34 (34.2% 9 39.9% 399 39 (39.9% 5 25.9% 259 25 (25.9% 7–14 714 14 (7–14 (NS 42.9%, 429 42.9% 42 (42.9%) andor or nonnephrotic non 35.5%, 355 35.5% 35 (35.5%) 13.2%. 132 13.2% 13 (13.2%) 67.1%, 671 67.1% 67 (67.1%) (MCD 25.4%, 254 25.4% 4 (25.4%) 12.7%, 127 12.7% 12 (12.7%) GN (GN 8.8%. 88 8.8% 8 (8.8%) (LN 11.8%. 118 11.8% (11.8%) p 0.01. 001 0.01 0 01 0.01) 1–3 2.6%–5.3% 2653 6 (FSGS 3.1%–1.8%, 3118 3.1%–1.8% 3.1%–1.8%) significance Conclusions time 19 202 1998200 1998–200 200 (1998–2005 2006201 2006–201 201 (2006–2013 2014202 2014–202 (2014–2021 34.2 (34.2 39.9 (39.9 25.9 (25.9 7–1 71 (7–1 42.9 (42.9% 35.5 (35.5% 13.2 (13.2% 67.1 (67.1% 25.4 (25.4% 12.7 (12.7% 8.8 (8.8% 11.8 (11.8% 00 0.0 1– 2.6%–5.3 265 311 3.1%–1.8 20 199820 1998–20 (1998–200 200620 2006–20 (2006–201 201420 2014–20 (2014–202 34. (34. 39. (39. 25. (25. 7– (7– 42. (42.9 35. (35.5 13. (13.2 67. (67.1 (25.4 12. (12.7 8. (8.8 11. (11.8 0. 2.6%–5. 26 31 3.1%–1. 19982 1998–2 (1998–20 20062 2006–2 (2006–20 20142 2014–2 (2014–20 (34 (39 (25 (7 (42. (35. (13. (67. (12. (8. (11. 2.6%–5 3.1%–1 1998– (1998–2 2006– (2006–2 2014– (2014–2 (3 (2 ( (42 (35 (13 (67 (12 (8 (11 2.6%– 3.1%– (1998– (2006– (2014– (4 (1 (6 2.6% 3.1% (1998 (2006 (2014 2.6 3.1 (199 (200 (201 2. (19 (20

Abstract Introduction Submandibular gland fistula (SGF) is a rare subset of salivary gland fistulas. It is seldom tough to diagnose them prior to surgical exploration, and it is often clinically confused with close differentials. An early diagnosis based on pertinent clinical features and focused radiological findings can be pivotal in optimal management and help prevent recurrence and avoid unnecessary investigations/interventions. Objective To review articles that discuss SGF and provide vital etiological, clinical, and imaging features of this rare entity that can aid in early clinical diagnosis. Data Synthesis An extensive review involving PubMed and Google Scholar and reported in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) standards. Conclusion Submandibular gland fistula is a rare entity. It can be confused with close differentials, including branchial fistulas, if not thoroughly examined. Discharge from fistulae along with submandibular pain/tenderness and/or swelling are important diagnostic clues. A history of trauma, nodule at the site of discharge, prior submandibular disease/calculi, or discharge aggravated with food further increases a clinical suspicion. Optimal radiological investigation looking for calculi/foreign body and delineating the fistula tract is vital to affirm a diagnosis. Gland with fistula excision is a commonly advocated treatment of choice with no reports of recurrence, although conservative management and gland preserving surgery have also reported a favorable prognosis. (SGF fistulas exploration differentials investigationsinterventions investigations interventions investigations/interventions etiological MetaAnalyses Meta Analyses PRISMA (PRISMA standards examined paintenderness pain tenderness andor clues trauma diseasecalculi disease calculi disease/calculi suspicion calculiforeign foreign prognosis

Antecedentes: Durante la práctica clínica se ha observado que los casos de vólvulo sigmoideo pueden tener complicaciones posteriores a su tratamiento correspondientes al síndrome de pseudoobstrucción colónica aguda (ACPO, por sus siglas en inglés) y crónica (CIPO, por sus siglas en inglés), siendo mucho más frecuente su forma aguda también llamado síndrome de Ogilvie. No se comprende completamente la causa y el mecanismo subyacente al desarrollo de estas condiciones. Aunque se han descrito posibles causas en otros estudios, la investigación enfocada en el estado de las células ganglionares y el microbioma del paciente es limitada. Este estudio tiene como objetivo aportar a la literatura médica el conteo de las células ganglionares y la diversidad microbiana de seis pacientes diagnosticados con pseudoobstrucción colónica aguda y crónica observada en pacientes de la zona altoandina del sur del Perú. Presentación de caso: El antecedente común que caracteriza y agrupa a los casos reportados es la sigmoidectomía previa por vólvulo de sigmoides, junto con la presencia de signos y síntomas de un cuadro obstructivo funcional agudo y crónico. En todos los casos, el diagnóstico clínico posterior al tratamiento de vólvulo sigmoideo fue ACPO o CIPO. Estos diagnósticos fueron confirmados mediante radiografía de abdomen y tomografía. Se inició un tratamiento médico conservador con Neostigmina. La falta de respuesta al tratamiento conllevó a realizar diversas técnicas quirúrgicas. Conclusión: Todos los pacientes mostraron hipoganglionosis. Según el análisis del microbioma, en cuatro de ellos, el filo predominante fue Firmicutes y el enterotipo predominante fue Prevotella. En los otros dos pacientes, se observó un porcentaje elevado de Proteobacterias, con Bacteroides como enterotipo predominante. La relación de Firmicutes/Bacteroidetes promedio fue de 4.9. Nuestro estudio muestra la existencia de disbiosis bacteriana en dos pacientes con hipoganglionosis colónica, que podría estar relacionada con la fisiopatología del ACPO y del CIPO. Adicionalmente, reportamos alteraciones en la frecuencia relativa de bacterias asociadas al metabolismo de flavonoides.

Background: During clinical practice, it has been observed that cases of sigmoid volvulus can develop complications post-treatment corresponding to acute colonic pseudo-obstruction (ACPO) and chronic intestinal pseudo-obstruction (CIPO), with the acute form, also known as Ogilvie's syndrome, being more common. The cause and underlying mechanism for the development of these conditions are not fully understood. Although potential causes have been described in other studies, research focused on the status of ganglion cells and the patient's microbiome is limited. This study aims to contribute to the medical literature by examining the ganglion cell content and microbial diversity in six patients diagnosed with acute and chronic colonic pseudo-obstruction observed in patients from the high Andean region of southern Peru. Case Presentation: The common background characterizing and grouping the reported cases is the previous sigmoidectomy for sigmoid volvulus, along with the presence of signs and symptoms of an acute and chronic functional obstructive condition. In all cases, the clinical diagnosis following the treatment of sigmoid volvulus was ACPO or CIPO. These diagnoses were confirmed by abdominal X-ray and tomography. A conservative medical treatment with Neostigmine was initiated. The lack of response to this treatment led to various surgical techniques being performed. Conclusion: All patients presented with hypoganglionosis. According to microbiome analysis, in four of them, the predominant phylum was Firmicutes and the predominant enterotype was Prevotella. In the other two patients, a high percentage of Proteobacteria was observed, with Bacteroides as the predominant enterotype. The average Firmicutes/Bacteroidetes ratio was 4.9. Our study shows the existence of bacterial dysbiosis in two patients with colonic hypoganglionosis, which could be related to the pathophysiology of ACPO and CIPO. Additionally, we report alterations in the relative frequency of bacteria associated with flavonoid metabolism.

Resumen La crisis tirotóxica es una patología poco frecuente, que se presenta en pacientes con hipertiroidismo; se presenta un caso clínico de una paciente de 38 años, con hipertiroidismo quien acude por alteración de estado de conciencia, fiebre y taquicardia, la causa de esta emergencia médica estuvo filiada a un cuadro de crisis tirotóxica, gracias al conocimiento de la clínica médica, esta patología puede afectar a varios órganos por los efectos tóxicos del exceso de hormonas tiroideas. Su diagnóstico y tratamiento se basa en la sospecha clínica, utilizando escalas como la de Burch y Wartofsky, además de niveles de hormonas tiroideas, marcadores de función hepática, cardiaca, renal, electrocardiograma, ecografía tiroidea, como complemento del mismo. La tormenta tiroidea tiene una alta tasa de mortalidad y los pacientes deben recibir un tratamiento inmediato, para manejar las complicaciones y restaurar la función tiroidea normal.

Abstract Thyrotoxic crisis is a rare pathology, which occurs in patients with hyperthyroidism; we present a clinical case of a 38-year-old patient with hyperthyroidism who comes for altered consciousness, fever and tachycardia, the cause of this medical emergency was related to a picture of thyrotoxic crisis, thanks to the knowledge of the medical clinic, this pathology can affect various organs by the toxic effects of excess thyroid hormones. Its diagnosis and treatment is based on clinical suspicion, using scales such as Burch and Wartofsky, in addition to thyroid hormone levels, liver function markers, cardiac, renal, electrocardiogram, thyroid ultrasound, as a complement to it. Thyroid storm has a high mortality rate and patients should receive immediate treatment to manage complications and restore normal thyroid function.

Abstract Objective: Signs and symptoms of osteomyelitis or septic arthritis in neonates and infants are often nonspecific and early-stage bone infections in infants may often go unnoticed. The objective of this study was to analyze the clinical characteristics of newborns and infants with osteomyelitis and septic arthritis to improve understanding of the disorder and to assist clinicians with diagnosis. Methods: A retrospective multicenter study was conducted on neonates (0-28 days old, n = 94) and infants (1–12 months old, n = 415) with osteoarticular infections. Data consisting of clinical characteristics, complications, laboratory outcomes, and the pathogenic microorganisms causing osteomyelitis were tabulated. The statistics were further broken down into two regions and the significant differences between neonates and infants were evaluated and compared to the literature. Results: Compared to infants, neonates had significantly lower incidences of fever (p < 0.0001), higher incidences of localized swelling (p = 0.0021), higher rate of infection at the humerus (p = 0.0016), higher percentage of Escherichia coli (p < 0.0001) and Klebsiella pneumoniae (p = 0.0039) infections, lower percentage of Staphylococcus aureus infections (p < 0.0001) and were more likely to develop septic arthritis (p < 0.0001). Conclusion: Distinct differences were found between neonatal and infants with osteoarticular infections. Future studies should focus on improving diagnosis and subsequent treatment regimens for younger age groups. Objective earlystage early stage unnoticed Methods 028 0 28 (0-2 old 94 1–12 112 1 12 (1–1 415 complications outcomes tabulated literature Results p 0.0001, 00001 0.0001 , 0001 0.0021, 00021 0.0021 0021 0.0021) 0.0016, 00016 0.0016 0016 0.0016) 0.0039 00039 0039 0.0001. . Conclusion groups 02 2 (0- 9 1–1 11 (1– 41 0000 0.000 000 0002 0.002 002 0.001 001 0.003 0003 003 (0 1– (1 4 0.00 00 ( 0.0 0.