Fig. 6

Histopathological and immunohistochemical examinations. A, B: Hematoxylin and eosin stain (×20). The tumor was mostly composed of slightly enlarged adipocytes of varying sizes, along with atypical stromal cells and lipoblast (dotted black circle). C CDK4 positive, D MDM2 positive, E p16 positive, F CD34 weak positive, G S-100 weak positive, H Ki-67 index of 2%. The tumor was diagnosed as a well-differentiated liposarcoma