multicentric myxoid liposarcoma; a case report and literature review

liposarcoma is a common malignant soft tissue tumor, accounting for 10% to 16% of all sarcomas. multicentric myxoid liposarcoma is an uncommon condition. differentiation between several primary tumors and metastasis of a single liposarcoma represents the main difficulty in diagnosis. a 47-years old woman presented with right thigh myxoid liposarcoma and underwent wide margin tumor resection. other investigations like cxr, abdominal and pelvic ct-scans were negative. after 18 months another myxoid liposarma was found in her ipsi-lateral breast without any evidence of other organs metastasis. second lesion location, time between two presentation and cytogenetic differences are accepted criteria to site a sarcoma in multicentric category, but in myxoid liposarcoma these can be explained by the special features inherent to this tumor.