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 characterize the extracellular vesicle protein cargo in the aqueous humor and plasma of patients with ocular toxoplasmosis. Methods: Aqueous humor and plasma were collected from six patients with active ocular toxoplasmosis and six patients with cataract. Extracellular vesicles were isolated, and western blotting and mass spectrometry were performed for protein analysis. Results: All plasma samples from patients with ocular toxoplasmosis and cataract were positive for the tetraspanins CD63 and TSG101. However, the aqueous humor from patients with ocular toxoplasmosis was positive only for CD63. Sixty-seven new unreported proteins were identified in the aqueous humor and plasma of patients with the ocular toxoplasmosis and cataract. Of the 67 proteins, 10 and 7 were found only in the cataract and ocular toxoplasmosis groups, respectively. In general, these proteins were involved in immune system activation and retina homeostasis and were related to infections and retina-associated diseases. Conclusion: The distinct protein signatures between ocular toxoplasmosis and cataract may be helpful in the differential diagnosis of ocular toxoplasmosis. However, more studies are needed to better understand the role of these proteins in the pathogenesis of ocular toxoplasmosis. Purpose Methods isolated analysis Results CD CD6 TSG101 TSG However Sixtyseven Sixty seven 6 1 groups respectively general retinaassociated associated diseases Conclusion TSG10 TSG1

ABSTRACT Langerhans cell histiocytosis comprises a heterogeneous range of clinical manifestations secondary to clonal proliferation of histiocytes, characterized by the accumulation of these cells in various organs and tissues. The ophthalmological component commonly involved is the orbit. Herein, we report a rare case of Langerhans cell histiocytosis with eyelid involvement, which resulted in severe ocular surface complications, which subsequently significantly impacted the patient’s quality of life. This case report highlights the fact that despite being rare, Langerhans cell histiocytosis should be included in the differential diagnosis of eyelid lesions. Furthermore, a multidisciplinary approach with a systemic overview is crucial for managing the ocular complications. histiocytes tissues orbit Herein involvement complications patients patient s life lesions Furthermore

ABSTRACT Optic neuritis is an important cause of unilateral and acute visual loss in young adults, but other differential diagnoses should be considered, especially when the disease has an atypical presentation. This report presents the case of a young woman with reduced visual acuity in her right eye, associated with optic disc edema and a relative afferent pupillary defect, that was initially misdiagnosed as optic neuritis and subsequently found to have paracentral acute middle maculopathy, possibly secondary to subtle impending central retinal vein occlusion. This case emphasizes the need to remember that retinal vascular diseases can occasionally mimic optic neuritis. Detailed anamnesis and ophthalmic examination can avoid unnecessary interventions. adults considered presentation eye defect maculopathy occlusion interventions

Resumen La incorporación de nuevas tecnologías, como ultrasonido, J-Plasma (plasma de helio) y el Microaire (vibroliposucción), ha facilitado los procedimientos de lipoescultura consiguiendo una mayor satisfacción del paciente. Los beneficios de estas tecnologías se acompañan de bajas complicaciones reportadas; el presente caso constituye la cuarta descripción de neumomediastino secundario a la utilización de Renuvion® (J-Plasma) posterior a la extracción de grasa en brazos y muslos por medio de liposucción; esta infrecuente complicación se debe considerar diagnóstico diferencial en el estudio de presentación clínica de disnea y enfisema subcutáneo durante el posoperatorio.

Abstract The incorporation of new technologies such as ultrasound, J-Plasma (helium plasma) and MicroAire (power assited liposuction) has facilitated liposculpture procedures, resulting in greater patient satisfaction. The benefits of these technologies are accompanied by low reported complications; this case is the fourth description of pneumomediastinum secondary to the use of Renuvion® (J-Plasma) after liposuction for fat removal in the arms and thighs. This rare complication should be considered as part of the differential diagnosis during the study of clinical dyspnea and subcutaneous emphysema in the postoperative period.

RESUMEN La neoplasia de células dendríticas plasmocitoides blásticas (NCDPB) es una malignidad hematológica poco frecuente y generalmente agresiva, por lo cual se requiere su reconocimiento precoz. A continuación, se describe el curso clínico de una paciente de 72 años con NCDPB, en cuyos hallazgos más relevantes destacó la presencia de lesiones cutáneas, organomegalias, infiltración de la médula ósea. Posterior al diagnóstico se indicó quimioterapia sistémica, con buena respuesta, no obstante, a los 2 meses presentó recidiva de lesiones y la paciente falleció. En esta enfermedad es necesario establecer el diagnóstico diferencial con trastornos linfoproliferativos, leucemias linfoides y mieloides agudas, constituyendo el análisis morfológico de las células neoplásicas un aspecto importante para una adecuada orientación diagnóstica.

ABSTRACT Blastic plasmacytoid dendritic cell neoplasia (BCDPN) is a rare and generally aggressive hematological malignancy, which requires early recognition. Below, the clinical course of a 72-year-old patient with NCDPB is described, whose most relevant findings included the presence of skin lesions, organomegaly, and bone marrow infiltration. After the diagnosis, systemic chemotherapy was indicated, with a good response; however, after 2 months the lesions recurred and the patient died. In this disease it is necessary to establish the differential diagnosis with lymphoproliferative disorders, lymphoid and acute myeloid leukemias, with the morphological analysis of the neoplastic cells being an important aspect for adequate diagnostic guidance.

RESUMEN La paracoccidioidomicosis es una micosis profunda sistémica, endémica en algunos países de Latinoamérica, de presentación clínica es de evolución aguda/subaguda, en nuestro país es el principal diagnostico diferencial de la tuberculosis pulmonar. Se describe el caso clínico de un hombre de 48 años, procedente de zona rural, inmunocompetente, que se presentó clínicamente por dificultad respiratoria, pérdida de peso de forma progresiva y lesiones en mucosas oral; como hallazgos radiológicos presentó infiltrados reticulares bilaterales. Desde el punto de vista micológico se evidenció la presencia del microorganismo en diversas muestras biológicas: biopsias de lesiones orofaríngeas y estudio micológico del esputo. Se realizó tratamiento dirigido con antimicótico intravenoso presentando buena respuesta al mismo con mejoría clínica.

ABSTRACT Paracoccidioidomycosis is a deep systemic mycosis, endemic in some Latin American countries, with an acute/subacute clinical presentation. In our country, it is the main differential diagnosis of pulmonary tuberculosis. We describe the clinical case of a 48-year-old man from a rural area, immunocompetent, who presented clinically with respiratory distress, progressive weight loss and lesions in the oral mucosa; as radiological findings, he presented bilateral reticular infiltrates. From a mycological point of view, the presence of the microorganism was evidenced in various biological samples: biopsies of oropharyngeal lesions and mycological study of sputum. Targeted treatment with intravenous antifungals was performed, presenting a good response to it with clinical improvement.

RESUMEN La Paracoccidioidomicosis (PCM), es una enfermedad sistémica endémica de países de América Latina, con alto impacto en términos de morbilidad, mortalidad y costos para el sistema de salud si los enfermos progresan a sus estadios avanzados. Este trabajo tuvo como objetivo recopilar datos divulgados en publicaciones sobre casos autóctonos de PCM, desde los primeros casos diagnosticados en Paraguay, con una descripción del contexto histórico e identificando a los pioneros en el diagnóstico en Paraguay, siguiendo un orden cronológico, hasta los casos más recientemente informados. Metodología: búsqueda en bibliotecas nacionales y bases de datos online de casos de PCM en Paraguay, publicados en revistas científicas históricas nacionales y otras fuentes disponibles en formato impreso, y artículos científicos más recientes disponibles en formato electrónico, respectivamente. Resultados: Se identificaron 479 casos de PCM en publicaciones entre los años 1935 y 2023, correspondientes a casos autóctonos y cuyos diagnósticos fueron realizados en territorio paraguayo. El Dr. Juan Boggino y colaboradores fueron los responsables de los primeros diagnósticos en el país. La forma clínica predominante fue la crónica. La media de edad de 45,78 años. La gran mayoría de los pacientes diagnosticados fueron oriundos de la Región Oriental del país, predominantemente hombres agricultores. Conclusión: La PCM es una enfermedad endémica del Paraguay, desde los primeros casos diagnosticados y hasta hoy en día, son detectados pacientes con una evolución grave y discapacitante de la enfermedad, lo que demuestra la necesidad de la difusión de su conocimiento y ampliación de la capacidad diagnóstica precoz a nivel nacional. Debido a su pleomorfismo clínico y su capacidad de simular otras enfermedades, es importante incluir a la PCM como diagnóstico diferencial de pacientes que presenten factores de riesgo para el desarrollo de la enfermedad.

ABSTRACT Paracoccidioidomycosis (PCM) is a systemic disease endemic to Latin American countries, with a high impact in terms of morbidity, mortality and costs for the health system if patients progress to advanced stages. This work aimed to collect data published in publications on autochthonous cases of PCM, from the first cases diagnosed in Paraguay, with a description of the historical context and identifying the pioneers in the diagnosis in Paraguay, following a chronological order, to the most recently reported cases. Methodology: search in national libraries and online databases of PCM cases in Paraguay, published in national historical scientific journals and other sources available in print format, and more recent scientific articles available in electronic format, respectively. Results: 479 cases of PCM were identified in publications between the years 1935 and 2023, corresponding to autochthonous cases and whose diagnoses were made in Paraguayan territory. Dr. Juan Boggino and collaborators were responsible for the first diagnoses in the country. The predominant clinical form was chronic. The average age was 45.78 years. The vast majority of patients diagnosed were from the Eastern Region of the country, predominantly male farmers. Conclusion: PCM is an endemic disease in Paraguay. Since the first cases were diagnosed and until today, patients with a severe and disabling course of the disease have been detected, which demonstrates the need to disseminate its knowledge and expand the early diagnostic capacity at the national level. Due to its clinical pleomorphism and its ability to simulate other diseases, it is important to include PCM as a differential diagnosis for patients who present risk factors for the development of the disease.

Abstract Hailey-Hailey disease is a rare genodermatosis described in 1939, with an autosomal dominant inheritance pattern, characterized by compromised adhesion between epidermal keratinocytes. It has an estimated prevalence of 1/50,000, with no gender or race predilection. It results from a heterozygous mutation in the ATP2C1 gene, which encodes the transmembrane protein hSPA1C, present in all tissues, with preferential expression in keratinocytes. Mutations in the ATP2C1 gene cause changes in the synthesis of junctional proteins, leading to acantholysis. It usually begins in adulthood, with isolated cases at the extremes of life. It manifests as vesico-bullous lesions mainly in the flexural areas, which develop into erosions and crusts. Chronic lesions may form vegetative or verrucous plaques. Pruritus, a burning feeling and pain are common. It evolves with periods of remission and exacerbation, generally triggered by humidity, friction, heat, trauma and secondary infections. The diagnosis is based on clinical and histopathological criteria: marked suprabasal acantholysis, loosely joined keratinocytes, giving the appearance of a “dilapidated brick wall”, with a few dyskeratotic cells. The acantholysis affects the epidermis and spares the adnexal epithelia, which helps in the differential diagnosis with pemphigus vulgaris. Direct immunofluorescence is negative. The main differential diagnoses are Darier disease, pemphigus vegetans, intertrigo, contact dermatitis, and inverse psoriasis. There is no cure and the treatment is challenging, including measures to control heat, sweat and friction, topical medications (corticosteroids, calcineurin inhibitors, antibiotics), systemic medications (antibiotics, corticosteroids, immunosuppressants, retinoids and immunobiologicals) and procedures such as botulinum toxin, laser and surgery. There is a lack of controlled clinical trials to support the choice of the best treatment. HaileyHailey Hailey 1939 pattern keratinocytes 150000 1 50 000 1/50,000 predilection ATPC ATP C ATP2C hSPA1C hSPAC hSPA tissues proteins adulthood life vesicobullous vesico bullous areas crusts plaques Pruritus common exacerbation humidity friction heat infections criteria dilapidated wall, wall , wall” cells epithelia vulgaris negative vegetans intertrigo dermatitis psoriasis challenging corticosteroids (corticosteroids inhibitors antibiotics, antibiotics antibiotics) (antibiotics immunosuppressants immunobiologicals toxin surgery 193 15000 5 00 1/50,00 19 1500 0 1/50,0 150 1/50, 15 1/50 1/5 1/

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.

Abstract Introduction. Rapunzel syndrome is an uncommon condition that manifests as trichobezoars, which are hair bundles in the stomach or small intestine that can mimics other surgical illnesses. Multiple complications can arise from delayed diagnosis and treatment. Clinical case. A 10-year-old female patient with trichotillomania and trichophagia, with abdominal pain and nonspecific symptoms of intestinal obstruction of eight months of evolution. Physical examination revealed epigastric tenderness and a solid mass was palpable in the mesogastric and epigastric region. An abdominal ultrasound showed gastric trichobezoar that extended into the small intestine. A gastrotomy was performed and the trichobezoar was extracted with satisfactory evolution of the patient. The comprehensive approach allowed knowing the psychological bond due to possible child abuse. Results. The patient had a satisfactory evolution and was discharged on the fifth day of hospitalization. He is currently being monitored by psychology, child psychiatry and pediatrics. Discussion. This clinical case highlights the importance of recognizing situations that seldom present in pediatrics, which may have a psychological aspect due to the presumption of child abuse, and which present as a recurrent organic condition simulating other frequent abdominal pathologies in childhood; all of which may lead to an unwanted outcome due to diagnostic delay. Conclusion. The comprehensive management of the pediatric patient is mandatory to recognize situations of presumed child abuse, in the face of a recurrent surgical conditions.

Resumen Introducción. El síndrome de Rapunzel es una entidad infrecuente, que se presenta como un tricobezoar a causa de una aglomeración de cabello acumulado dentro del tracto gastrointestinal, por lo que simula otras patologías quirúrgicas. Caso clínico. Paciente femenina de 10 años de edad, con tricotilomanía y tricofagia, dolor abdominal y síntomas inespecíficos de obstrucción intestinal de ocho meses de evolución. Al examen físico se encontró abdomen con distensión y masa palpable en epigastrio y mesogastrio. La ecografía permitió hacer el diagnóstico de tricobezoar gástrico extendido hasta el intestino delgado, por lo que se llevó a cirugía para gastrotomía y se extrajo el tricobezoar, con evolución satisfactoria de la paciente. El abordaje integral permitió conocer la atadura sicológica por posible maltrato infantil. Resultado. La paciente tuvo una evolución satisfactoria y se dio egreso al quinto día de hospitalización. Actualmente se encuentra en seguimiento por sicología, siquiatría infantil y pediatría. Discusión. El caso clínico denota la importancia en reconocer situaciones de presentación infrecuente en pediatría, que puedan estar asociadas a alteraciones sicológicas o presunción de maltrato infantil y que se presenten como una condición orgánica recurrente que simule otras patologías abdominales frecuentes en la infancia. El retraso diagnóstico puede conducir a un desenlace no deseado con complicaciones. Conclusión. Se hace mandatorio el manejo integral del paciente pediátrico y aumentar la sensibilidad para reconocer situaciones de presunción de maltrato infantil, sobre todo en pacientes con una condición orgánica quirúrgica recurrente.

RESUMEN Se presenta el caso de una mujer joven, trabajadora de salud, residente en una región altoandina del Perú, con exposición reciente a animales de granja y artrópodos, que presenta síndrome febril agudo indiferenciado, trombocitopenia severa y extravasación pulmonar y abdominal. Posteriormente desarrolla meningitis e hipoacusia neurosensorial bilateral de instalación temprana y muestra serología reactiva a infección aguda por Rickettsias sp. Se discuten las consideraciones epidemiológicas y clínicas en el diagnóstico diferencial para un manejo oportuno.

ABSTRACT We present the case of a young female health worker, resident in a high Andean region of Peru, with recent exposure to farm animals and arthropods, who developed acute febrile undifferentiated syndrome, severe thrombocytopenia and pulmonary and abdominal extravasation. Subsequently, the patient developed meningitis and early onset bilateral neurosensorial hypoacusis and showed reactive serology to acute infection by Rickettsia sp. Epidemiological and clinical considerations in the differential diagnosis for early management are discussed.

RESUMEN El Colesteatoma del Conducto Auditivo Externo (CCAE) constituye una patología poco frecuente. Su diagnóstico es fundamentalmente clínico, se apoya en los estudios de imagen y confirmación final anatomopatológica. Algunos casos pueden ser asintomáticos y otros casos pueden presentar complicaciones como parálisis facial, afectación del oído medio, etc. Su tratamiento es quirúrgico con una serie de técnicas denominadas canaloplastias, las cuales tienen como objetivo retirar el tejido colesteatomatoso y crear un mecanismo de autoevacuación. Presentamos la descripción de un caso de colesteatoma del conducto auditivo complicado con absceso retroauricular en una paciente joven con estenosis congénita, discutimos los aspectos relevantes respecto a la clínica, diagnósticos diferenciales y opciones terapéuticas en una revisión de la literatura disponible.

ABSTRACT Cholesteatoma of the External Auditory Canal (CCAE) is a rare pathology. Its diagnosis is fundamentally clinical, based on imaging studies and final anatomopathological confirmation. Some cases can be asymptomatic and other cases can present complications such as facial paralysis, middle ear involvement, etc. Its treatment is surgical with a series of techniques called canaloplasties, which aim to remove the cholesteatomatous tissue and create a self-evacuation mechanism. We present the description of a case of cholesteatoma of the auditory canal complicated with retroauricular abscess in a young patient with congenital stenosis, discuss the relevant aspects regarding the clinic, differential diagnoses, and therapeutic options in a review of the available literature.

ABSTRACT Introduction: Otalgia is not reported as a frequent manifestation of Chikungunya in the literature. Cases of otalgia in the context of Chikungunya are reported and their management is exposed. Clinical cases: Two cases of women aged 26 and 32 years who presented with fever, rash, arthralgias and unilateral otalgia with preauricular tumor are presented. Both had positive anti-Chikungunya IgM antibodies and intraparotid lymphadenopathy on ultrasound. They were treated with NSAIDs and corticosteroids with good response. Discussion: Cervical adenitis due to Chikungunya is reported with variable frequency, but not as a dominant symptom. Unilateral otalgia allows to rule out otitis. Its management is conservative with good results. Conclusion: A series of cases of unilateral reflex otalgia due to intraparotid adenitis in Chikungunya was presented, highlighting its differential diagnosis and management.

RESUMEN. Introducción: La otalgia no se reporta como una manifestación frecuente de Chikungunya en la literatura. Se reportan casos de otalgia en el contexto de Chikungunya y se expone su manejo. Casos clínicos: Se presentan dos casos de mujeres de 26 y 32 años que acudieron con cuadro febril, exantema, artralgias y otalgia unilateral con tumoración preauricular. Ambas tuvieron anticuerpos IgM anti-Chikungunya positivos y adenopatías intraparotídeas en ecografía. Se trataron con AINES y corticoides con buena respuesta. Discusión: La adenitis cervical por Chikungunya se reporta con frecuencia variable, pero no como síntoma dominante. La otalgia unilateral permite descartar otitis. Su manejo es conservador con buenos resultados. Conclusión: Se presentó una serie de casos de otalgia refleja unilateral por adenitis intraparotídea en Chikungunya, destacando su diagnóstico diferencial y manejo.