An isolated huge unruptured aneurysm of the right coronary sinus of Valsalva was detected incidentally in a 47-year-old man. Echocardiography and aortograms revealed severe aortic insufficiency with moderate stenosis, and mild dilatation of the lower ascending aorta without annulo-aortic ectasia. At operation, a sclerotic bicuspid aortic valve was confirmed. These abnormal findings necessitated a reconstruction of the aortic root with a valved conduit and reimplantation of the coronary arteries (Bentall operation with the Carrel patch technique). Pathologic examination of the resected aortic wall showed diffuse sclerotic change and partial medial degeneration.

Behcet's disease is generally recognized as a chronic multi-system disease. Approxymately 8% of patients with Behct's disease will have serious vascular compilcations which is called vasculo-Behcet's disease. A male patient of 41 year old was admitted to our clinic, complaining pain of left popliteal fossa and hypesthesia of left lower leg. A popliteal aneurysm was found. Resection of the aneurysm and a saphenous vein graft were successfully performed. Neuropathy disappeared after the surgery. Aneurysms in Behcet's disease mainly appear in major arteries, and rarely in peripheral arteries. Compression neuropathy in the popliteal aneurysm of Behcet's disease has been rarely reported. Early resection of aneurysm before completion of neuropathy is recommended for succsessful outcome.

Primary cardiac tumors are comparatively rare. Primary cardiac angiosarcoma is the most common cardiac malignant tumor and the most common site of this tumor is in the right atrium. It is usually difficult to diagnose and treat this condition before death. The present case of primary cardiac angiosarcoma was located in the left atrium, which is very rare. A cardiac malignant tumor was suspected in this 56-year-old man based on chest MRI examination. The operation was performed successfully but its outcome was very poor.