Rishi Arvind, Anderson Todd A, Kirschenbaum Alexander M, Unger Pamela D
Mount Sinai School of Medicine, New York, NY, USA
Mount Sinai School of Medicine, New York, NY, USA.
Int J Surg Pathol. 2014 Jun;22(4):347-51. doi: 10.1177/1066896913492199. Epub 2013 Jun 20.
We present a case of a 61-year-old female presenting with a bladder tumor that occurred 7 years after her previous diagnosis of Clark's level III mid-back melanoma. The bladder tumor was submitted to histopathology without accompanying clinical history, and an initial diagnosis of high-grade urothelial carcinoma was rendered based on epithelioid and sarcomatoid appearing pleomorphic histopathology. We present this case to highlight the diagnostic challenge presented by the rare occurrence of metastatic melanoma to the urinary bladder and the potential pitfall of this lesion being diagnosed as high-grade urothelial carcinoma in the presence of limited clinical history.
