Chest
Clinical InvestigationsBRONCHOGENIC CARCINOMARisk Factors of Pneumothorax and Bleeding: Multivariate Analysis of 660 CT-Guided Coaxial Cutting Needle Lung Biopsies
Section snippets
Study Population
From March 1995 to August 2001, a cohort of 660 consecutive CT-guided percutaneous coaxial cutting needle biopsies for focal lung lesions in 649 patients was subjected to a statistical analysis of the risk factors for pneumothorax and bleeding. Twelve patients underwent repeat biopsies. Repeat biopsies (10 patients had two biopsies, and 1 patient had three needle biopsies) were considered to be new procedures in the calculations, as variables selected were different in each procedure. There
Results
From initial univariate analyses, significant risk factors affecting the incidence of pneumothorax were lesion size (p < 0.001), lesion depth (p < 0.001), age (p = 0.003), emphysema seen on CT scan (p = 0.007), radiologists (p = 0.011), needle-pleural angle (p = 0.036), and chest wall thickness (p = 0.048), while significant risk factors affecting the incidence of pulmonary bleeding were lesion size (p < 0.001), lesion depth (p < 0.001), presence of pleural effusion (p < 0.001), chest wall
Discussion
In CT-guided coaxial cutting needle lung biopsy, the risk factors affecting pneumothorax rate are lesion size, lesion depth, and radiologist; and the risk factors affecting bleeding complication are lesion size, lesion depth, and the absence of pleural effusion. Our results show that the occurrences of pneumothorax and bleeding complications are independent of each other, so they are considered separately in the following discussion.
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