Invasive Bladder Sarcomatoid Urothelial Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** An invasive urothelial carcinoma of the bladder that exhibits spindle cell sarcomatoid features.

**Synonyms:** - Bladder Carcinosarcoma - Bladder Sarcomatoid Urothelial Carcinoma - Infiltrating Bladder Urothelial Carcinoma Sarcomatoid Variant - Infiltrating Bladder Urothelial Carcinoma Sarcomatoid Variant - Infiltrating Bladder Urothelial Carcinoma, Sarcomatoid Variant - Invasive Bladder Urothelial Carcinoma, Sarcomatoid Variant