Invasive Renal Pelvis Sarcomatoid Urothelial Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** An invasive urothelial carcinoma that arises from the renal pelvis and exhibits sarcomatoid features.

**Synonyms:** - Infiltrating Renal Pelvis Urothelial Carcinoma, Sarcomatoid Variant - Invasive Renal Pelvis Urothelial Carcinoma, Sarcomatoid Variant - Kidney Pelvis Sarcomatoid Transitional Cell Carcinoma - Sarcomatoid Transitional Cell Carcinoma of Kidney Pelvis - Sarcomatoid Transitional Cell Carcinoma of Renal Pelvis - Sarcomatoid Transitional Cell Carcinoma of the Kidney Pelvis - Sarcomatoid Transitional Cell Carcinoma of the Renal Pelvis