Recurrent Undifferentiated Pleomorphic Sarcoma

**Semantic type:** Neoplastic Process

**Definition:** Reemergence of undifferentiated pleomorphic sarcoma after a period of remission.

**Synonyms:** - Malignant Fibrous Histiocytoma Recurrent - Recurrent Malignant Fibrous Histiocytoma - Recurrent Unclassified Pleomorphic Sarcoma - Recurrent Unclassified Pleomorphic Sarcoma (Formerly Recurrent "MFH") - Recurrent Unclassified Pleomorphic Sarcoma (Formerly Recurrent "Malignant Fibrous Histiocytoma") - Relapsed Malignant Fibrous Histiocytoma