Acute Hemorrhagic Incarceration of Prolapsed Giant Rectal Tubulovillous Adenoma: A Rare Case of Anorectal Emergency

Abstract

Colorectal adenomas are polyps that arise from the mucosa and demonstrate neoplastic features. Increasing dysplasia and malignant potential of adenomas are related to their size, villous component, and patient’s age. Giant villous polyps of the rectum represent a real potential for an anorectal emergency. They may be involved in rectal bleeding, obstruction, prolapse, or incarceration. We herein present a case of a 57-year-old man presented to the emergency department because of an incarcerated transanal prolapse of a giant hemorrhagic tubulovillous rectal adenoma, which caused clinical symptoms and signs that were mistaken for prolapsed hemorrhoids, and was treated successfully by transanal excision.

Keywords

• rectal polyp
• tubulovillous adenoma
• prolapse
• incarceration
• transanal excision