219 A Rare Case of Simple Appendiceal Mucocele

Abstract An Appendiceal mucocele is described as a dilated and abnormal accumulation of mucin in the appendix, most commonly as a result of epithelial proliferation. However, it can also be caused by an obstruction or inflammation of the appendix. It is a rare disease and sometimes it can present like an acute appendicitis. Computed tomography should be used vastly to prevent serious complications such as pseudomyxoma peritonei, if underlying pathology is neoplasm, or ileocolic intussusception We present here a case study on patient with an appendiceal mucocele, together with its radiological, endoscopic as well as histological features. 74-year-old gentlemen was referred for a colonoscopy due to symptom of anaemia. He had an incidental finding of abnormal appendix orifice bulging into the lumen for about 15mm with an appearance of submucosal cystic lesion. He subsequently had a CT thorax, abdomen and pelvis which showed a 7–8cm appendiceal mucocele with 1.8cm diameter. An urgent Laparoscopic Appendicectomy was performed, which revealed an intact but large distended appendix with 9cm in length. The appendiceal lumen was filled with mucus material. No polyps or tumour identified. Histological examination revealed that this was a simple appendiceal mucocele with no evidence of malignancy. The patient was well post-operatively with no complication noted.