Giant Retroperitoneal Lipomatous Angiomyolipoma Simulating Liposarcoma- A Brief Case Report -
이대근, 한정호, 김성주, 최동일,
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이대근 ( Lee Da-Keun )
성균관대학교 의과대학 삼성서울병원 병리학교실
한정호 ( Han Joung-Ho )
성균관대학교 의과대학 삼성서울병원 병리학교실
김성주 ( Kim Sung-Joo )
성균관대학교 의과대학 삼성서울병원 이식외과
최동일 ( Choi Dong-Il )
성균관대학교 의과대학 삼성서울병원 방사선과
KMID : 0357920070410060406
Abstract
Extrarenal retroperitoneal angiomyolipomas (AML) are extremely rare, therefore they may present a diagnostic challenge. In this paper, the authors describe a case of a huge retroperitoneal AML in a 49-year-old woman who presented with sudden abdominal pain. Computed tomography revealed the presence of a large, round, fatty mass in the retroperitoneal space, which was easily removed by surgery. The mass was well encapsulated and dark yellow on the cut surface. Microscopically, the tumor was exclusively composed of adipose tissue with frequent multivacuolated, lipoblast-like cells masquerading as well differentiated liposarcoma. In addition, there were many clear, epithelioid cells present, especially around the small blood vessels, which were reactive for HMB-45 and smooth muscle actin.
키워드
Angiomyolipoma;Liposarcoma;Retroperitoneal neoplasms
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