Successful enucleation of retroperitoneal cyst.

Retroperitoneal mesenteric cyst is a rare entity among the other mesenteric cysts and intra-abdominal tumours. a 42-year-old woman reported with pain abdomen off and on since one month. there were no other complaints. on ultrasonography a mesenteric cyst was diagnosed. surgery was planned which revealed a retroperitoneal mesenteric cyst. enucleation of the cyst was done. in follow-up of 6 months patient is asymptomatic. we are reporting a rarely reported retroperitoneal mesenteric cyst in the mesentery of the descending colon or sigmoid.