[Staged operation of aortic valve stenosis with concomitant sigmoid colon cancer by minimally invasive cardiac surgery; report of a case].

Severe aortic stenosis was found by preoperative echocardiography in a 79-year-old female patient with sigmoid colon cancer. Staged operation was planned. First, bioprosthetic aortic valve replacement was performed by minimally invasive cardiac surgery. She underwent concomitant colostomy to avoid malnutrition which may have occurred in case of colon obstruction. On 25th day after cardiac surgery, curative sigmoidectomy was performed. One year after the operation, she is doing well without any major complications.