Thanks to Dr. Debra Zynger, Ohio State University, Columbus, Ohio, USA, for contributing this case and discussion, and to Dr. Bonnie Choy, Northwestern University, Chicago, Illinois, USA, for reviewing the discussion.
Clinical history:
A 61 year old man with no cancer history had a flaky rash in the penoscrotal region for 9 months. CT scans of the abdomen and pelvis were negative. He underwent a scrotal excision and partial penectomy.
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