A Case Report of Benign Multicystic Mesothelioma of Abdomen

Benign multicystic abdominal mesothelioma is a rare tumor that occurs mainly in women in their reproductive age. To date 130 cases have been reported. It is characterized by the formation of multilocular cysts with thin-walled that frequently appears as large, intraabdominal masses. When tumor appears in the abdominal cavity, it attaches to intra-peritoneal organs like intestine and omentum, spleen, liver or progress toward retroperitoneal organs such as pancreas. Differentiation from other cystic lesions could be only with histologic study and surgery is mandatory for diagnosis and treatment. In this study we report a case of 52- year-old woman with 20×15cm abdominal mass that undergone surgery. Histopathological examination revealed a multicystic mesothelioma with retroperitoneal progressio