*Department of Surgery, Division of Colorectal Surgery, Kaohsiung Veterans General Hospital†Department of Surgery, Division of Colorectal Surgery, Faculty of Medicine, National Yang-Ming University, Kaohsiung, Taiwan, R.O.C
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Mesenteric cysts are rare abdominal tumors with an incidence of 1/105,000 to 250,000 hospitalized adult surgical patients. These cysts may occur in every part of the mesentery, from duodenum to rectum. Most frequently, cysts are localized in small bowel mesentery. They usually present during the first decade of life, mostly occurring in pediatric patients. These lesions characteristically arise from the mesenteric border of the bowel. The majority are asymptomatic and, if found, are discovered incidentally during abdominal exploration or radiologic examination. Traditionally, the treatment of mesenteric cyst is surgical excision by laparotomy. However, in 1993, Mackenzie described the first laparoscopic excision of a mesenteric cyst. Since then, several cases have been reported but mainly in small intestine. Here, we reported an adult patient of a mesenteric duplication enteric cyst embedded in sigmoid mesocolon mimicking retroperitoneal neurogenic tumor, which was completely excised using the laparoscopic approach (Supplemental Digital Content 1, http://links.lww.com/SLE/A73).