Based on a retrospective study the authors describe their experience with the treatment of spontaneous pneumothorax in 159 patients during a 5-year period/1989-1992/. For the diagnosis they used, in addition to clinical and X-ray examination, in indicated cases also scintigraphy of the lungs, CT examination, thoracoscopy and bronchoscopy. During the period of investigation the basic therapeutic operation was thoracic drainage/one or several drains/, whereby in recent years there were more indications for surgery. Relapses were recorded after simple drainage in 46.5% of the patients, after surgery the authors did not record any relapses of spontaneous pneumothorax. Based on their own experience and data in the literature the authors recommend the radical approach to treatment of spontaneous pneumothorax using the least invasive videothoracoscopic technique which they have been using ever since 1993.