683 A CASE OF MESENTERIC CYST CONFUSED WITH OVARIAN ENDOMETRIOMA Se Ik Kim, MD, Young Dae Kim, MD, Hye Seung Lee, MD, PhD, Byung Chul Jee, MD, PhD Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul; Department of Pathology, Seoul National University Bundang Hospital, Seongnam; Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Se...