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Purpose

To determine the rate, clinical significance, and predictors of delayed pneumothorax after CT-guided lung biopsy.

Methods

Medical and imaging records of all patients who underwent CT-guided lung biopsy between January 1, 2012, and January 9, 2015, were reviewed.“Early pneumothorax” was defined as one visualized on CT scan at the time of biopsy,“delayed pneumothorax” as one discovered on the first follow-up chest X-ray (CXR), and “clinically significant pneumothorax” as one requiring chest tube placement.

Results

Three hundred fifty-seven lung biopsies were performed; 79 patients did not have follow-up CXR and were excluded. Out of 278 cases included in the study, early pneumothorax occurred in 109 patients. Follow-up CXRs were available in the remaining 169 patients without early pneumothorax and were obtained 3.1±2.9 h after biopsy. The rate of delayed pneumothorax was 8.6%(24 …