Systolic anterior motion of the mitral valve associated with acute myocardial infarction in a 62-year-old patient.

A 62-year-old patient was admitted to our hospital for treatment of early gastric cancer. After total gastrectomy, he suffered from anteroseptal myocardial infarction. Systolic anterior motion of the mitral valve which was not observed before surgery was observed during the acute phase of myocardial infarction and completely disappeared 3 weeks after the onset of myocardial infarction. Systolic anterior motion of the mitral valve in this patient may have been caused by changes in left ventricular wall motion during the acute phase of myocardial infarction.