Myxoma Mimic in a Patient With Acute Myeloid Leukemia.

Cardiac masses are rare conditions that, depending on their size and location, can cause several cardiac and systemic symptoms. We describe a case of a 21-year-old male with a history of syphilis, pulmonary tuberculosis, and acute myeloid leukemia (AML), in whom a transthoracic echocardiogram assessment was solicited before the initiation of induction chemotherapy. The study revealed a pedunculated, highly mobile mass in the right atrium that protruded to the right ventricle. Surgical resection was performed. During surgery, tricuspid valve perforation was noted and was associated with severe tricuspid valve regurgitation. Histopathological analysis of the resected mass determined that the lesion was a cardiac thrombus.