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Radiologically and histologically mixed liposarcoma: a report of two biphasic cases
Taichi Irie1, Masahito Hatori, Mika Watanabe
1Departments of Orthopaedic Surgery and Pathology, Tohoku University School of Medicine, 1-1 Seiryo-machi, Sendai, Miyagi 980-8547, Japan. t-irie@gonryo.med.tohoku.ac.jp
Abstract:
We report two cases of liposarcomas showing biphasic patterns, radiologically and histologically. The first case was a 52-year-old man with a 17 x 12 cm intramuscular tumor in the right thigh. MR imaging revealed a mass composed of two components: a fat component and another soft tissue component. Histological diagnosis revealed mixed-type liposarcoma consisting of well-differentiated and myxoid liposarcoma. The second case was a 62-year-old man with a 22 x 15 cm intramuscular tumor in the left calf. MR imaging showed a mass composed of fat and non-fat components. The histological diagnosis was well-differentiated and pleomorphic liposarcoma.