[Histiocytosis of Langerhans cells in the lung: case report].

A case of a 21-year-old smoker has been described, clinically asymptomatic, in whom radiological examination revealed numerous diffused lesion in the lungs. On the basis of histological examination revealed numerous diffused lesions in the lungs. On the basis of histological examination of the lung biopsy specimen collected by means of videothoracoscopy, histiocytosis of pulmonary Langerhans cells has been diagnosed. The instituted treatment with prednisone and abstinence from nicotine lead to the remission of pulmonary lesions. Videothoracoscopy proved to be an effective method of collection of biopsy specimens from the lungs in diagnosis of diffused pulmonary lesions.