Abstract

Mesenteric Lymphangioma is a rare entity which is usually benign as well as diffîcult to diagnose in the preoperative period. Mesenteric and retroperitoneal cystic lymphangiomas comprise less than 5% of all lymphangiomas. It is often discovered accidentally or due to some clinical features resulted from a variety of complications such as pressure on surrounding organs, dyspeptic symptoms, abdominal pain, intraabdominal rupture, etc, We herein presented a case of histologically proven mesenteric cystic lymphangioma following surgery due to an intraabdominal mass of unknown primary origin. A 50-year old woman admitted to the hospital with abdominal pain. Radiological studies revealed a well-margined abdominal cystic mass measuring 7x8 cm next to the right hepatic lobe. In the operation, a cystic mass derived from mesentery was observed and totally excised. Histological examination confirmed mesenteric cystic lymphangioma and postoperative period was uneventful. During one year follow-up period, no recurrence was documented by radiological studies, namely, abdominal ultrasonography and tomography. Mesenteric cystic lymphangioma should be considered in the differential diagnosis of the well- margined intraabdominal masses with unknown etiology and total excision of the mass maintains cure treatment.