Lesion size (cm) Number of cases Pneumothorax Negative Positive NA Rates of pneumothorax ≤ 2.0 69 42 24 3 36.4% (24/66) 2.1 to 5.0 83 53 26 4 32.9% (26/79) > 5.0 38 26 9 3 25.7% (9/35)

Table 3: Comparison of core needle biopsies with different lesion sizes (in 190 cases).