Complications Of CT-Guided Percutaneous Lung Biopsy And Its Risk Factors Of Old Patients

ObjectiveTo evaluate the complication rate of CT-guided percutaneous lung biopsy and determine the risk factors of old patients.Methods204old patients (≥65years old) who underwent transthoracic needle biopsy under CT guidance were analyzed retrospectively, in the risk factors of complications, such as demographics, biopsy procedures, individual radiological features.ResultsThe complications included pneumothorax accounting for15.20%(31/204), hemoptysis21.57%(44/204), and cutaneous emphysema1.96%(4/204),chest pain0.98%(2/246), and with no mortality. Analysis by logistic regression showed that the incidence of pneumothorax was correlated with the length of the needle path, lesion size, and emphysema around the lesion; the risk factors of bleeding were the length of the needle path, lesion size and the degree of the enhancement in CT. With logistic regression analysis, forecasting equation was obtained respectively, showing a sensitivity of87.1%and a specificity of49.1%in pneumothorax while a sensitivity of54.5%and a specificity of80.8%in bleeding. DiscussionLonger needle path, smaller lesion size, and the exsit of emphysema around the lesion predict happen of pneumothroax; meanwhile longer needle path, smaller lesion size and more obvious degree of the enhancement by CT indicate happen of bleeding after lung biopsy.