摘要:<正> Since 1980, 170 patients including 103 men and 67 women, 10~81 years of age have undergone biopsies using home-made double-leaf sawtoothed needle and Rotex needle. Of them 60 were biopsied with the homemade sawtoothed needle, 110 cases with Rotex needle. The accuracy rate of using sawtoothed needle was 95% while the incidence of complication was 21.7%.On the other hand, the accuracy rate of using the Rotex needle was 98% and the incidence of complication 8.2% (9/110). In the former group of 60 patients, there was only one false negative (1.6%)and in the latter group of 110 cases, there were 2 false negatives (1.8%).Complication including pneumothorax, transient hemoptysis, hemothorax and hemopneumothorax was not serious and did not require any specific treatment,except for one case of pneumothorax in which a chest tube was needed.Despite of higher incidence of complication using the home-made sawtoothed needle, it is recommended to be used for lesions involving the chest wall or near the chest wall.By using it one can obtain tissue core for histological examination.