Tuberous sclerosis is a syndrome characterized by the facial skin lesion, epilepsy, and mental retardation. Pulmonary involvement is uncommon, but when the lung is involved by tuberous sclerosis it shows characteristic reticulonodular infiltration and cystic changes. We experienced a 34-year-old female patient of known tuberous sclerosis admitted due to pneumothorax. Chest PA showed diffuse fine reticulonodular infiltration and chest CT revealed diffuse cystic changes of the lung. Pleurodesis with tetracycline was done to prevent recurrence, but chylothorax occurred four months after the treatment. Pleurosis was tried again and anti estrogen treatment began.