Cardiac Undifferentiated Pleomorphic Sarcoma

**Semantic type:** Neoplastic Process

**Definition:** An undifferentiated pleomorphic sarcoma usually arising from the left atrium of the heart. It is characterized by the presence of fibrohistiocytic cells, giant cells, and spindle cells arrranged iin a storiform pattern. Clinical presentation includes signs and symptoms associated with left atrial hemodynamic changes.

**Synonyms:** - Cardiac Malignant Fibrous Histiocytoma - Cardiac Unclassified Pleomorphic Sarcoma - Cardiac Unclassified Pleomorphic Sarcoma (Formerly Cardiac "MFH") - Cardiac Unclassified Pleomorphic Sarcoma (Formerly Cardiac "Malignant Fibrous Histiocytoma") - Heart Undifferentiated Pleomorphic Sarcoma