Endoscopic diagnosis and treatment of an appendiceal mucocele: A case report

Figure 1 Abdominal computed tomography revealed a cystic mass approximately 3 cm in diameter with fat stranding.

Figure 2 Biopsy of the protrusion revealed inflammatory changes in the cecal mucosa and a small amount of myxoid tissue in the focal zone.

Figure 3 Colonoscopy. A: A smooth-surfaced submucosal mass of the cecum with the appendiceal orifice in the center; B: A large amount of clear yellowish mucus flowing through the appendiceal orifice into the cecum after removing the submucosal mass; C: The inner wall of the appendix was smooth with no nodules.

Figure 4 Repeat colonoscopy revealed no submucosal mound in the normal appendiceal orifice.

Figure 5 Postoperative computed tomography showed no abnormalities in the appendix.