A 34-year-old man, who had undergone the gastrectomy for gastrointestinal 
stromal tumor (GIST) and para-aortic paraganglioma 3 years before, was found to 
have a left lung tumor on a computed tomography. The tumor was revealed to be a 
pulmonary hamartoma, and diagnosed as Carney's triad. This is a rare case of 
complete type Carney's triad of an adult male.