[Open lung biopsy in severely ill patients with unrecognized pulmonary infiltrates].

In three patients, a man aged 34 with aids, a woman aged 67 with recurrent major dyspnoea and a woman aged 73 with chronic lymphatic leukaemia, examination revealed progressive dyspnoea while the chest X-rays showed infiltrative lesions in both lungs. In view of the inadequate response to the treatment administered, an open lung biopsy was performed, following which the diagnosis could be made. Adequate treatment was then started and followed by clinical recovery. It is not clear if open lung biopsy carries higher risks of mortality and morbidity than biopsy by means of flexible bronchoscopy. Open lung biopsy more often leads to a classifying diagnosis. For collection of endobronchial or transbronchial biopsy samples in ununderstood diffuse interstitial lung diseases, flexible bronchoscopy is the method of first choice. Open lung biopsy is a justified supplementary examination, at any rate in severely ill, immunocompromised patients who require adequate therapy without delay.