Giant rectal intramural hematoma following endoscopic submucosal dissection successfully treated with conservative therapy: A case report

Figure 1 Endoscopic views during endoscopic submucosal dissection. A: Preoperative lesion; B: Post-endoscopic submucosal dissection mucosal defect; C: Resected specimen.

Figure 2 Computed tomography scan on postoperative day 4. A: Intestinal air-fluid level (white arrow); B: Rectal hematoma (white arrow) and hemoperitoneum (orange arrow).

Figure 3 Colonoscopy. A: Emergency colonoscopy on postoperative day 4 showing a huge intramural hematoma at the endoscopic submucosal dissection site; B: Follow-up colonoscopy on postoperative day 15 demonstrating significant resolution of the hematoma; C: Complete healing with scar formation at the endoscopic submucosal dissection site, confirmed at 6-month follow-up.