Malignant fibrous histiocytoma of the heart presenting as an atrial myxoma

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Abstract
A 37-year-old woman presented with signs and symptoms suggestive of mitral stenosis and insufficiency. Subsequent evaluation demonstrated a left atrial tumor which was suspected clinically and at the time of initial surgery to be an atrial myxoma. Histologic examination revealed that the tumor was actually a malignant fibrous histiocytoma. Despite near total removal at surgery and subsequent radiotherapy, the tumor recurred within six months in the left atrium. Re-excision was followed by a third recurrence in the same site. Cancer 42:2466–2471, 1978.