Microscopically, the tumor consisted of well-differentiated liposarcoma (A, hematoxylin-eosin, ×100). At high-power view, well-differentiated liposarcoma was characterized by multivacuolated lipoblasts (B and C, hematoxylin-eosin, ×200). On immunohistochamical analysis lipogenic areas showed positivity for vimentin (D, ×200), S100 (E, ×200) and MDM2 (F, ×200).