Fig. 4
Axial CT images of a 61-year-old man with a 23-mm mass in the right lower lobe. (a-c). The coaxial introducer was passed through the chest wall and pleura step by step to reach the inside of the lesion. Needle-pleura angle was 45° and the procedure time was 15 min. Patient reported a pain score of 3. (d). The photomicrograph showed that the pathological result was small cell carcinoma (Hematoxylin-eosin stain, ×100).