Bleeding rectal pseudoaneurysm following endoscopic submucosal dissection managed with endoscopic ultrasound-guided absorbable gelatin sponge injection.

ABSTRACT:

Background and aims

Bleeding secondary to a pseudoaneurysm following endoscopic submucosal dissection (ESD) is exceedingly rare with limited cases reported.

Methods

A 74-year-old woman presented with recurrent hematochezia despite conventional endoscopic hemostasis following ESD of a 50-mm rectal polyp. The patient underwent computed tomography angiography that revealed a rectal pseudoaneurysm with active bleeding. She subsequently underwent flexible sigmoidoscopy with EUS. At the site of the adherent clot, a penetrating feeder arterial vessel in the adventitia with a small pseudoaneurysm in the rectal wall (intramural) could be identified on EUS with Doppler. Using a 19-gauge fine-needle aspiration needle primed with saline, we injected 6 mL of absorbable gelatin sponge int

SUBMITTER: Maniak A 

PROVIDER: S-EPMC12827024 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature