Fig. 1

a Once the needle tip is confirmed to be just in contact with the nodule, the stylet is removed from the needle, and a microcoil (arrow) is inserted by pushing the stylet using CT guidance. After localization, PCNA (percutaneous needle aspiration) is simultaneously performed to obtain specimens for cytologic examination. b This chest x-ray shows the radiopacity (arrow) created by a microcoil inserted during PCNA. c During thoracoscopy, the microcoil (arrow) in contact with the nodule is clearly visualized on the monitor of portable fluoroscopic unit, which helps to detect the nodule and plan the stapling resection. d The wedge resection of the pulmonary nodule, including the microcoil (arrow), is identified using fluoroscopy