Recurrent Undifferentiated Pleomorphic Sarcoma in the Left Atrium

Abstract

We present the case of a young man with constitutional symptoms and dyspnea lasting 9 months, with evidence of a giant mass located at the left atrium obstructing the outflow tract of the mitral valve requiring resection. Pathology showed poorly differentiated pleomorphic sarcoma with very aggressive recurrence shortly after surgery. This pathology is un-frequent and has an ominous short-term prognosis. Its treatment is surgical resection and adjuvant chemotherapy and radiotherapy is not yet clearly defined.