Abstract :
The purpose of this study was to analyse the rate of pneumothorax after CT guided transthoracic needle aspiration biopsy (TNAB) of lung masses, using variable needle sizes. A total of 70 patients underwent this procedure, among them, 18 patients (26%) developed pneumothorax, with 18G needles 24 patients underwent FNA and seven of them (25%) developed pneumothorax, with 20G needle, 26% developed pneumothorax and with the 22G needle 25% developed Pneumothorax. As a conclusion the study shows that the rate of pneumothorax after CT guided TNAB of lung masses remains almost the same regardless of the size of the needle
