Granulocytic sarcoma, also known as chloroma, is an uncommon tumor typically seen in patients with acute myelogenous leukemia (AML). Extramedullary cardiac involvement of granulocytic sarcoma is rare and there is a paucity of information regarding its multidetector computed tomography (MDCT) imaging appearance. We present a case of extramedullary granulocytic sarcoma of the heart detected on MDCT in a young adult male with AML. An understanding of how extramedullary granulocytic sarcoma of the heart appears on MDCT may decrease or prevent delays in diagnosing this uncommon, although important, complication from AML.
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