Duplication is a rare congenital abnormality and may occur in any region of the gastrointestinal tract. A 19-year-old woman was admitted due to lower abdominal pain. Abdomino-pelvic CT scan showed a cystic mass interpreted as mesenteric cyst or duplication cyst. On the operation finding, it seemed to be arised from mesentery but attached to the ileum. Microscopically, the cystic wall was lined by non-keratinizing squamous, ciliated pseudostratified columnar epithelium, and ectopic gastric mucosa with two distinct muscular layers and a serosa. We report the first case of ileal duplication cyst lined by squamous and ciliated columnar epithelium in Korea.
Cilia/pathology ; Cysts/*congenital/pathology/radiography ; Epithelium/pathology ; Female ; Humans ; Ileal Diseases/*diagnosis/pathology/radiography ; Ileum/*abnormalities/pathology ; Tomography, X-Ray Computed ; Young Adult

We report on an exceptional vascular cause of gastrointestinal hemorrhage. A 30-yr-old man was admitted because of recurrent hematochezia. Colonoscopy showed circumferential, erythematous, and nodular vascular distensions with hematocystic spots in the terminal ileum resembling varicosis and subsequent computed tomography with 3-dimensional angiographic reconstruction revealed a vascular architecture around the terminal ileum. No other potential source of bleeding was identified. The patient was treated by ileocecectomy and the final diagnosis was of an arteriovenous malformation confined to the terminal ileum. He has been followedup without a further hemorrhagic episode.
Adult ; Arteriovenous Malformations/complications/*pathology ; Diagnosis, Differential ; Gastrointestinal Hemorrhage/etiology/*pathology ; Humans ; Ileum/*abnormalities ; Intestines/*blood supply ; Male ; Recurrence ; Varicose Veins/etiology/*pathology