Invasive Bladder Sarcomatoid Urothelial Carcinoma without Heterologous Elements

**Semantic type:** Neoplastic Process

**Definition:** Invasive bladder sarcomatoid urothelial carcinoma characterized by the absence of heterologous elements.

**Synonyms:** - Bladder Sarcomatoid Urothelial Carcinoma without Heterologous Elements - Infiltrating Bladder Urothelial Carcinoma, Sarcomatoid Variant without Heterologous Elements - Invasive Bladder Urothelial Carcinoma, Sarcomatoid Variant without Heterologous Elements