Muscle-invasive angiosarcoma of the urinary bladder: Case report.

A 71-year-old male with benign prostatic hyperplasia managed by self-catheterization presented with gross hematuria. A CT scan of abdomen and pelvis demonstrated abnormal bladder appearance with right sided mass and a diverticulum. Patient underwent transurethral resection of bladder tumor. Pathology was significant for high-grade muscle-invasive angiosarcoma. The malignant cells showed positive staining for vimentin and CD31. Given patient's underlying comorbidities and following multidisciplinary discussion, hospice care was pursued. The aim of this case report is to provide an overview on clinical presentation, diagnosis, and current management of this rare entity of genitourinary sarcoma.