Table 1.

Prevalence of Pneumothoraces, Diagnosed on Chest X-ray, Among Various Procedure Groups

Procedure Group	Sample Size (n)	Prevalence of pneumothorax – no. (%)
CT-guided transthoracic lung biopsy1,2	77	7 (9%)
Transbronchial needle lung biopsy3	48	1 (2%)
Thoracentesis	60	0 (0%)
Total	185	8 (4%)

¹Includes one patient with CT-guided cryoablation.

²Four patients developed intra-operative pneumothorax requiring chest tube drainage and were excluded from the study.

³One patient developed intra-operative pneumothorax requiring chest tube drainage and was excluded from the study