Risk of pneumothorax not increased by obstructive lung disease in percutaneous needle biopsy.

All computed tomography directed lung biopsies from 1987 to 1991 were retrospectively reviewed. Pneumothorax occurred in 33 of 93 (35 percent) patients; 16 of these patients or 17 percent overall required a chest tube. No correlation was found between the presence of obstructive lung disease and the incidence of pneumothorax. Patients with smaller lesions were more likely to incur a pneumothorax. No relation was found with central or peripheral location, patient's age, or the operator and the incidence of pneumothorax. Patients with a pneumothorax were more likely to require a chest tube if they had obstructive lung disease.