Early presentation of undifferentiated pleomorphic cardiac sarcoma.

Undifferentiated pleomorphic cardiac sarcomas are extremely rare, highly malignant mesenchymal cardiac neoplasms typically presenting in the sixth decade of life. Here, we have reported a rare case of undifferentiated pleomorphic cardiac sarcoma presenting with dyspnea in a young male. On further evaluations, a large, ill-defined, multilobulated mass was observed in left atrium (LA) with encasement of left circumflex artery, attachment to mitral valve annulus, and invasion through LA wall and pericardium.