Endoscopic fenestration in the diagnosis and treatment of delayed anastomotic submucosal abscess: A case report and review of literature

Figure 1 Anastomotic site findings. A: Previous colonoscopy showing no abnormalities near the anastomotic site; B: Last colonoscopy performed at the local hospital showing a smooth protuberance near the anastomotic site; C: Endoscopic ultrasound image showing a hypoechoic structure in the rectum; D: No obvious thickening or strengthening of the anastomotic wall was visible in the contrast-enhanced computed tomography scan of the pelvic cavity.