Thanks to Dr. Raul Gonzalez, Emory University School of Medicine, Atlanta, Georgia, USA for contributing this case and discussion and to Dr. Naziheh Assarzadegan, University of Florida, Gainesville, Florida, USA for reviewing the discussion.
Clinical history:
A 45 year old man presents to a gastroenterologist complaining of constipation and rectal bleeding. A single ulcerated rectal lesion is found on colonoscopy and is biopsied.
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Note: This case was originally emailed to our e-newsletter subscribers on May 18, 2023.