PURPOSE
To evaluate the incidence and risk factors of pneumothoraces requiring prolonged maintenance of a chest tube following CT-guided percutaneous lung biopsy in a retrospective, single-center case series.
MATERIALS AND METHODS
All patients undergoing CT-guided percutaneous lung biopsies between 06/2012 and 05/2014 who required chest tube insertion for symptomatic or enlarging pneumothoraces were identified. Based on chest tube dwell time, patients were divided into two groups: short-term (0–2 days) or prolonged (3 or more days). The following risk factors were stratified between groups: patient demographics, target lesion characteristics, and procedural/periprocedural technique and outcomes.
RESULTS
2337 patients underwent lung biopsy, 543 developed pneumothorax (23.2%), 187 required chest tube placement (8.0%), and 55 required a chest tube for three days or more (2.9% of all biopsies, 29.9% of all chest tubes). The median chest tube dwell time for short-term and prolonged groups was 1.0 days and 4.7 days, respectively. Transfissural needle path predicted prolonged chest tube requirement (OR: 2.5; p=0.023). Other factors were not significantly different between groups.
CONCLUSION
2.9% of patients undergoing CT guided lung biopsy required a chest tube for 3 or more days. Transfissural needle path during biopsy was a risk factor for prolonged chest tube requirement.