[Evanescent carcinoma of the prostate. Incidence, clinical and histopathological characteristics.] / Carcinoma evanescente de próstata. Incidencia, características clínicas e histopatológicas.

OBJECTIVE: To determine the incidence and clinical and histopathological characteristics of patients with prostatic evanescent carcinoma in the Urology Department of the Hospital Universitario de Caracas. METHODS: We reviewed the medical records of 257 patients undergoing radical prostatectomy for a previous diagnosis of prostatic carcinoma in the period January 2010 to June 2016. RESULTS: Four patients had evanescent carcinoma corresponding to 1.55%, similar to documented studies, thus maintaining their percentage of appearance in time. Adenocarcinomas are usually associated with Gleason scores ≤6, but they can present in carcinomas with less differentiated histopathological pattern, like Gleason 7 (3 + 4). CONCLUSIONS: In the pathological study of the specimen of radical prostatectomy of patients with evanescent carcinoma, it is advisable to apply additional immunohistochemistry technique or seek for a second pathological opinion, to confirm this entity, and to rule out a technical or interpretation failure.

Carcinoma evanescente de próstata. Incidencia, características clínicas e histopatológicas / Evanescent carcinoma of the prostate. Incidence, clinical and histopathological characteristics

OBJETIVO: Determinar la incidencia y las características clínicas e histopatológicas de los pacientes con Carcinoma evanescente prostático en el servicio de Urología del Hospital Universitario de Caracas. MÉTODO: Se revisaron las historias de 257 pacientes sometidos a prostatectomía radical por un diagnóstico previo de carcinoma prostático, en el período enero 2010 - junio 2016. RESULTADOS: Se encontraron 4 pacientes con carcinoma evanescente correspondiendo a un 1,55%, similar a estudios documentados, manteniendo así su porcentaje de aparición en el tiempo. Generalmente se asocia a adenocarcinomas con escalas de Gleason ≤6, pero se puede presentar en carcinoma con patrón histopatológico menos diferenciado, como Gleason 7 (3+4). CONCLUSIONES: En el estudio histológico de la pieza de prostatectomía radical, de los pacientes con carcinoma evanescente, es recomendable que se le aplique técnica de inmunohistoquímica adicional, para confirmar esta entidad, y descartar una falla técnica o de interpretación

OBJECTIVE: To determine the incidence and clinical and histopathological characteristics of patients with prostatic evanescent carcinoma in the Urology Department of the Hospital Universitario de Caracas. METHODS: We reviewed the medical records of 257 patients undergoing radical prostatectomy for a previous diagnosis of prostatic carcinoma in the period January 2010 to June 2016. RESULTS: Four patients had evanescent carcinoma corresponding to 1.55%, similar to documented studies, thus maintaining their percentage of appearance in time. Adenocarcinomas are usually associated with Gleason scores ≤6, but they can present in carcinomas with less differentiated histopathological pattern, like Gleason 7 (3 + 4). CONCLUSIONS: In the pathological study of the specimen of radical prostatectomy of patients with evanescent carcinoma, it is advisable to apply additional immunohistochemistry technique or seek for a second pathological opinion, to confirm this entity, and to rule out a technical or interpretation failure