Testicular fibroma of gonadal stromal origin in an adult male / Fibroma testicular de origen gonadal estromal en un varón adulto

Para-testicular masses are a rare entity, and therefore the diagnosis and management nearly always lead to clinical doubts. Aside from the doubts that arise from these masses being uncommon, it is always necessary to rule out the malignancy process of them. Sexual cord tumors are extremely rare. Testicular fibroma of gonadal stromal origin is a proliferative process that can develop in para-testicular structures. The objective of our study is to present a rare case report of testicular fibroma of gonadal stromal origin as well as the well-documented diagnostic process and the successful therapeutic management that was subsequently carried out. We report a case of a 68-year old male who came in for a consult due to the casual finding of a nodule in his left testicle with normal tumor markers. Ultrasonography showed a nodular image that was well-defined with a diffusely homogeneous echotexture; it was also hypoechoic, vascularized and demonstrated hydrocele. MRI revealed a solid tumor with extrinsic growth to the left testicle and epididymis, and the lesion was relatively hyperintense in T1-weighted image and hypointense in T2. A surgical exeresis of the para-testicular tumor and hydrocelectomy was performed. The pathological anatomy and immunohistochemistry revealed a fibroma of gonadal stromal origin. Histopathological analysis made a diagnosis, although its clinical and radiological characteristics make it one of the differential diagnoses to consider in testicular tumors. Its characteristics, radiological and histopathological, allow for conservative management in clinical practice. (AU)

Las masas paratesticulares son una entidad rara, por lo que su diagnóstico y tratamiento casi siempre dan lugar a dudas clínicas. Más allá de las dudas que surgen por el hecho de que estas masas sean poco comunes, siempre hay que descartar el proceso de malignidad de las mismas. Los tumores del cordón sexual son extremadamente raros. El fibroma testicular de origen estromal gonadal es un proceso proliferativo que puede desarrollarse en estructuras paratesticulares. El objetivo de nuestro estudio es presentar un reporte de un caso raro de fibroma testicular de origen del estroma gonadal así como el proceso diagnóstico bien documentado y el manejo terapéutico exitoso que se llevó a cabo posteriormente. Presentamos el caso de un varón de 68 años que acude a consulta por el hallazgo casual de un nódulo en el testículo izquierdo con marcadores tumorales normales. La ecografía mostró una imagen nodular bien definida con una ecotextura difusamente homogénea; además era hipoecoico, vascularizado y demostraba hidrocele. La resonancia magnética reveló un tumor sólido con crecimiento extrínseco en el testículo izquierdo y el epidídimo, y la lesión era relativamente hiperintensa en la imagen potenciada en T1 e hipointensa en T2. Se realizó exéresis quirúrgica del tumor paratesticular e hidrocelectomía. La anatomía patológica y la inmunohistoquímica revelaron un fibroma de origen estromal gonadal. El análisis histopatológico permitió establecer el diagnóstico, aunque sus características clínicas y radiológicas lo convierten en uno de los diagnósticos diferenciales a considerar en los tumores testiculares. Sus características, radiológicas e histopatológicas, permiten un manejo conservador en la práctica clínica. (AU)

Acute hyperammonemic encephalopathy due to a portosystemic shunt in a non-cirrhotic adult patient.

OBJECTIVE: To report a successfully treated hyperammonemia due to a portosystemic shunt in adult patient. DATA SOURCE: A patient with an altered mental status due to severe elevated ammonia level because of a portosystemic shunt. CONCLUSIONS: Hyperammonemia is not always related to liver failure in critically ill patients, but should be considered in all unknown origins of an altered mental status. A portosystemic shunt can be the responsible for this phenomenon, and it has a newly treatment technique named plug-assisted retrograde transvenous obliteration (PARTO), which can be quickly performed with high technical success rate and clinical efficacy for the treatment of the splenorenal and/or gastrorenal shunt.