Lungenklinik des Instituts für Innere Medizin MMA, Lódź/Polen.
The results of transthoracic biopsy in 100 cases and of transthoracic punction in 42 cases were analysed. The material which was obtained by the two methods was on principle investigated cytologically. A comparison of the two methods is given. The rate of complications with both methods was approximately 10% pneumothorax rarely haemoptysis. The advantages and disadvantages of the methods are demonstrated.