[Birt-Hogg-Dubé syndrome with repeated pneumothorax; report of a case].

A 36-year-old man had been treated by thoracoscopic bullectomy because of left pneumothorax at another hospital. 2 weeks post-surgery, he was transferred to our hospital because of recurrent left pneumothorax. Chest computed tomography (CT) revealed multiple, irregular-shaped pulmonary cysts of various sizes predominating in the apex of both lungs. Thoracoscopy showed diffuse multiple thinwalled small cysts on the visceral pleura. Small cyst with air leakage was sutured and other cysts were cauterized. He was diagnosed as having Birt-Hogg-Dubé (BHD) syndrome by DNA sequence analysis of his FLCN gene.