Supplementary Material for: Complete Response of Rare Sarcomatoid Upper Tract Urothelial Carcinoma Variant : Case Report and Literature Review

Infiltrating urothelial carcinoma sarcomatoid variant is a rare variant of urothelial carcinoma. We report a case of a 68-year-old female with a history of hematuria. CT Scan with contrast showed a mass in the 1/3 distal of the right ureter. The biopsy result showed a high-grade infiltrating urothelial carcinoma. A radical nephroureterectomy (RNU) was performed but at the follow-up after 3 months, there was a recurrent mass and Gemcitabine-Cisplatin chemotherapy was given. Since a high-grade infiltrating urothelial carcinoma sarcomatoid variant was an aggressive tumor, we need to give more attention to evaluating this tumor.