primary peritoneal liposarcoma in a middle age woman

liposarcoma is a mesenchymal malignant tumor and is the second-most common soft tissue sarcoma in adults. primary peritoneal liposarcoma is very rare. we report a case of abdominal liposarcoma originating from peritoneum in 57-year old woman, presenting with hugeness of abdomen.   the symptoms had been begun from one month ago without any pain, discomfort or gastrointestinal symptoms. in physical examination a large mass with approximate size of 30×35 cm and firm density was found in left lower part of abdomen. the patient underwent laparotomy . the pathologic diagnosis was well differentiated liposarcoma. after 5 months of treatment the patient is well and no problem, complication or recurrence has been reported .