Undifferentiated pleomorphic sarcoma: Diagnosis of exclusion

Abstract

Malignant soft-tissue tumors which were designated as malignant fibrous histiocytoma are regrouped by the WHO (in 2002) under the new entity termed as “undifferentiated pleomorphic sarcoma.”1 It accounts for less than 5% of all adult soft-tissue sarcomas. Here, we report the lesion in a 70-year-old man who presented with high-grade undifferentiated pleomorphic sarcoma in the lower extremity.

Keywords

• adult soft-tissue sarcomas
• malignant fibrous histiocytoma
• soft-tissue sarcoma of lower extremity
• undifferentiated pleomorphic sarcoma