Effect of needle-tract bleeding on pneumothorax and chest tube placement following CT guided core needle lung biopsy

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Abstract

Background: Bleeding in the biopsy tract has been studied for its ability to decrease the risk of pneumothorax with indefinite results in the previous studies. Purpose: To investigate the risk factors for needle-tract bleeding (NTB) and the possible effect of NTB on the pneumothorax and resultant chest tube placement after CT-guided cutting needle biopsy (CT-CNB) of pulmonary lesions. Methods: Predictive variables for NTB and the effect of NTB on the development of pneumothorax and consequent chest tube placement were retrospectively determined in 416 patients who had undergone an 18-gauge non-coaxial CT-CNB (338 men and 78 women; average age, 59.3 years). Patient-related parameters were age, gender, patient position, and severity of pulmonary emphysema. Lesion-related variables were size, localization, and contour characteristics of the lesion. Procedure-related variables were the presence of atelectasis, pleural tag, and fissure in the needle-tract, length of the aerated lung parenchyma crossed by needle, needle entry angle, number of pleural punctures, the experience of the operator, and procedure duration. All variables were analyzed by x2 test and logistic regression analysis. Results: NTB was demonstrated in 142 of 421 (33.7%) procedures. The predictive variables of NTB were smaller lesion size (p = 0.011) and greater lesion depth (p = 0.002). In patients without emphysema around the lesion, the pneumothorax developed in 44/190 cases (23.1%) without NTB and in 12/95 procedures (12.6%) with NTB (p < 0.001). Conclusion: NTB may have a preventive effect on pneumothorax development, particularly in the absence of emphysema around the lesion.

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Soylu, E., Ozturk, K., Gokalp, G., & Topal, U. (2019). Effect of needle-tract bleeding on pneumothorax and chest tube placement following CT guided core needle lung biopsy. Journal of the Belgian Society of Radiology, 103(1). https://doi.org/10.5334/JBSR.1591

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