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The Korean Journal of Pathology 2005;39(3): 200-202.
Mixed Liposarcoma: A Case Report.
Jeung Il Kim, Hyun Jeong Kang, Kyung Un Choi
1Department of Orthopedic Surgery, College of Medicine, Pusan National University, Busan, Korea.
2Department of Pathology, College of Medicine, Pusan National University, Busan, Korea. dlsgo90@hanmail.net
True mixed liposarcomas are extremely rare tumors. We report here on a case of mixed liposarcoma that was composed of well differentiated and pleomorphic liposarcoma. A 76-year-old man presented to us with a mass in his left upper arm. This lesion had been there for twenty years, it was recently growing rapidly and had doubled in size during the recent 2 months. The MR image showed a mass composed of a fat component and a soft tissue component with necrosis. The old fat component was revealed as well differentiated liposarcoma, and the recent growing soft tissue component was revealed as pleomorphic liposarcoma. The two components showed different immunohistochemical results for MDM2.
Key Words: Mixed Liposarcoma
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