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Updated: Aug 19, 2026

Implantation and Evaluation of Melanoma in the Murine Choroid via Optical Coherence Tomography
Published on: December 2, 2022
Primary malignant melanoma of the urethra
Erin E Katz1, Kimiko Suzue, Mark A Wille
1Department of Surgery, Section of Urology, University of Chicago Pritzker School of Medicine, Chicago, Illinois 60637, USA.
Abstract:
Primary malignant melanoma of the urethra is an aggressive neoplasm associated with a poor prognosis. The outcome is dependent on early diagnosis and surgical intervention. However, the diagnosis is often delayed as a result of difficulties related to differentiating this lesion from other disorders. Such difficulties result from the variety of clinical and pathologic presentations that are common to melanoma. We report a case of primary malignant melanoma of the urethra with subsequent retrograde seeding of the bladder initially diagnosed and managed as invasive urothelial carcinoma.
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