Late Ureteral Obstruction and Hematuria from De Novo Angiosarcoma in a Renal Transplant Patient

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Abstract
A patient is described with a long-term functioning renal allograft who presented with ureteral obstruction and hematuria from an angiosarcoma. The diagnosis of ureteral obstruction was established preoperatively with computerized tomography guided anterograde pyelography. This represents the first documented case of an angiosarcoma occurring de novo in a renal allograft recipient. Continued awareness is needed of the increased risk of malignancy following transplantation.