# Challenges associated with low rectal malignant obstruction stenting: a case report

## TL;DR

A 63-year-old woman with a rectal tumor near the anal verge successfully had a stent placed, defying traditional medical advice.

## Contribution

Demonstrates successful stent placement in a traditionally contraindicated area for rectal cancer treatment.

## Key findings

- A stent was safely placed 5 cm from the anal verge in a patient with rectal cancer.
- The procedure allowed for rapid decompression and enabled timely chemoradiotherapy.
- This case challenges the conventional belief that stenting near the anal verge is inadvisable.

## Abstract

An ongoing debate exists regarding the feasibility of placing self-expanding metallic stents (SEMS) within 5 cm of the anal verge. Traditionally, SEMS have been considered contraindicated for patients with a malignant rectal obstruction within this region due to potential impact on the anorectal ring or anal canal, which can cause incontinence, proctalgia, and tenesmus. However, in the case of a 63-year-old female who presented with distention, abdominal pain, and diminishing stool output, the rectal exam identified a bulky fixed mass. Imaging studies revealed large bowel obstruction and high-grade stricture, with a minuscule residual lumen. Endoscopy identified a bulky mass obscuring the lumen at 5 cm from the anal verge, and biopsy confirmed adenocarcinoma. Despite the traditionally held contraindication, a 2.5 cm × 9.0 cm colonic stent was successfully deployed, leading to brisk colonic decompression. This allowed the patient to promptly undergo chemoradiotherapy.