Date of Presentation:12/07/2016

Attending pathologist: Martha Yearsley, MD

Presented by: Luke Blower, MD

Prepared by: Luke Blower, MD



A retirement age male with a history of prostate cancer and melanoma in situ presented with rectal bleeding and proctitis. Sigmoidoscopy was performed and identified a ulcer at the level of the rectum.

What is the most likely diagnosis?

  1. Metastatic melanoma
  2. Viral proctitis
  3. Metastatic prostate cancer
  4. Radiation proctitis
Radiation proctitis