Osteoclast-rich undifferentiated carcinoma of the bladder and the diagnostic usefulness of immunohistochemistry. A case report / Carcinoma urotelial indiferenciado con células gigantes tipo osteoclasto: Ayuda inmunohistoquímica para una entidad poco frecuente

Osteoclast-rich undifferentiated carcinoma (ORUC) of the urinary tract is a rare variant of urothelial carcinoma, first described in 1985 by Kitazawa et al. It has a worse prognosis compared to other histological variants of invasive urothelial carcinoma and its diagnosis may prove challenging due to the variability in its immunohistochemical profile. We present a case of ORUC in which GATA3 immunostaining was a useful diagnostic tool.(AU)

El carcinoma urotelial indiferenciado con células gigantes tipo osteoclástico es una variante poco frecuente del carcinoma urotelial, descrito por primera vez en 1985 por Kitazawa et al. que debido al peor pronóstico que asocia y a la variabilidad del perfil inmunohistoquímico que presenta, hace de esta entidad un verdadero reto diagnóstico para los patólogos. Presentamos aquí un caso, exponiendo la utilidad e importancia de GATA3 en el diagnóstico de esta variante infrecuente de carcinoma urotelial.(AU)

Osteoclast-rich undifferentiated carcinoma of the bladder and the diagnostic usefulness of immunohistochemistry. A case report.

Osteoclast-rich undifferentiated carcinoma (ORUC) of the urinary tract is a rare variant of urothelial carcinoma, first described in 1985 by Kitazawa et al. It has a worse prognosis compared to other histological variants of invasive urothelial carcinoma and its diagnosis may prove challenging due to the variability in its immunohistochemical profile. We present a case of ORUC in which GATA3 immunostaining was a useful diagnostic tool.