Left atrial myxoma is a rare disease and its recurrence is reported to be always possible whenever primary excision is incomplete. Cardiac Myxoma is rare disease of the heart, and it has a little chance of recurrence. We experienced a patient of recurrent left atrial myxoma who was 31 years old, had been gotten excision of Lt. atrial myxoma when she was 28 years of her age. She was gotten mitral valve replacement simultaneously during 2nd operation with difficulty. So we report this case with the review of the literatures. [KTCS 1981;3:260-267]Surgical Treatment of Acute Pyogenic Pericarditis followed the Sepsis Ki Woo Shin, M.D.,* Ho Wan Lee, M.D.* and Dong Jun Lee, M.D.* Two cases of acute pyogenic pericarditis are, one case, 12-year-old male patient, followed the bacteremia of pneumonia and other case, 9 year old female patient, followed the bacteremia of osteomyelitis. After the confirmed diagnosis by pericardial aspiration, the emergency pericardial window was made to relief the severe cardiogenic symptoms. The general symptoms were improved immediately, but 40 days and 15 days after pericardiostomy, in each case, the sign and symptoms of cardiac compression were seen with recurrent cardiac tamponade. Pericardiectomy with median sternotomy was performed in each case and thereafter the patients were discharged without any problems.[KTCS 1981;3:268-273]