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지방육종으로 오인된 후복막강에서 기원한 거대 지방종 1예
이경록 ( Kyoung Rok Lee ),서태진 ( Tae Jin Seo ),조준호 ( Jun Ho Cho ),김형일 ( Hyung Il Kim ),허영회 ( Young Hoi Hur ),조성범 ( Sung Bum Cho ),이완식 ( Wan Sik Lee ),주영은 ( Young Eun Joo ) 대한소화기학회 2010 대한소화기학회지 Vol.55 No.6
Lipomas are the most common benign tumors of adipose tissue among adults. Lipomas can occur almost anywhere in the trunk, extremities, mediastinum, and pelvis, but retroperitoneal lipomas are extremely rare. It should be distinguished from well differentiated liposarcoma in order to provide the appropriate treatment and follow up. We experienced a case of 60-year-old patient with large retroperitoneal lipoma mimicking liposarcoma causing palpable abdominal mass and pain. Abdominal computerized tomography (CT) showed 33×22 cm sized bulky fat-containing mass with contrast enhanced solid portion in right retroperitoneum. Positron emission tomograpgy (PET) revealed increased 18F-FDG uptake at solid portion shown in abdominal CT. Imaging studies confirmed a high index of suspicion on liposarcoma. Laparotomy showed a large encapsulating tumor arising from retroperitoneum with fat necrosis. Pathologic examination of resected specimen revealed normal mature adipocytes without atypical cells, compatible with lipoma. (Korean J Gastroenterol 2010;55:394-398)