Results: Case description Conclusion: A 78-year-old male patient was admitted in November,

2010, due to abdominal pain. Physical examination shows the pain was localized at right lower quadrant with light tenderness. Ultrasonography showed a diameter 5.3 cm mass of ileocecum, cross section showed “concentric circle sign”. Abdomen CT scan revealed LY2606368 chemical structure focal cystic dilation of the appendiceal distal end and swelling of the appendix, with intussusception into the ascending colon. Fiber endoscopy examination of the colon sees a size of 4.0 cmx5.0 cm spherical masses in the cecum. Preoperative diagnosis: appendix mucinous cyst? intussusception. Exploratory laparotomy see cystic tumor of appendix into the cecum, formation of intussusception to plug the intestinal cavity. Ileocecal resection was performed. The final pathologic diagnosis was mucinous cystadenoma with inflammation. The patient was discharged on the postoperative ninth day and no complication occurred. Postoperative follow-up of 6 months, no metastasis MK-1775 mouse and recurrence were occurred. This work was part supported by National

Natural Science Foundation of China, No. 81273065 and No.81072369. Key Word(s): 1. Intussusception; 2. cystadenoma; 3. appendix; 4. secondary; Presenting Author: XUEYUAN CAO Additional Authors: JING JIANG, LIANG HE, JIAN SUO, QUAN WANG Corresponding Author: XUEYUAN CAO Affiliations: First Hospital of Jilin University Objective: Introduction Methods: Duplication cyst is congenital malformation that can arise throughout the alimentary tract from the oral cavity to the anus. The majority are diagnosed in infancy and childhood. Duplication cyst 4��8C is rare in adults and there are few reports on a diagnosis made before operation. Thus ascertaining the existence of such a lesion is difficult. We presented one case of a duplication cyst of the small intestine found by contrast-enhanced computed tomography. Results: Case description Conclusion: A 32-year-old male was

admitted to our department with a chief complaint of lower abdominal pain for 1 month. On physical examination, there was tenderness and a semi-mobile mass in the lower abdomen. In abdominal contrast-enhanced computed tomography, a size 20.0×5.0 cm cystic mass, were demonstrated in the lower peritoneal cavity which is adjacent to the small bowel loops. It has slightly enhancing 0.5 cm-1.5 cm thickness walls, (Figure. 1). At laparotomy, there was a large 20.0×5.0 cm tubular fluid-filled cystic mass from the ileum extending toward the mesentery, which was blind-ended (Figure. 2). The entire cyst was excised without small bowel resection. There was no connection between the cyst and intestine lumens. The histopathologic examination revealed an enteric duplication cyst. The patient remained well in follow-up. This work was part supported by National Natural Science Foundation of China, No. 81273065 and No.81072369. Key Word(s): 1. duplication; 2.