Incidental Diagnosis of Duplicated Alimentary Tract Lined with Ectopic Tissue in an Adult Presenting with Appendicitis—A Case Report—

Abstract

A 22-year-woman with ovarian cystoma and asthma presented with upper abdominal pain. Physical examination revealed a temperature of 38°C. Computed tomography revealed appendicitis and a cystic mass in the pouch of Douglas. Preoperative diagnosis was difficult, and laparoscopic appendectomy was performed. Laparotomy revealed that the cystic mass in the pouch of Douglas was connected with the ileum. The cystic mass was tentatively diagnosed as duplication of the alimentary tract, and we performed resection of a segment of the small bowel. Histopathological examination of the resected specimen revealed that the mass represented a duplicated alimentary tract segment with ciliated and stratified squamous epithelium and resembled bronchial tissue.