Diagnostic Accuracy of CT-Guided Core Biopsy of Ground-Glass Opacity Pulmonary Lesions

malignant disease is greater than 80 % and 90%, respectively [10–16]. However, to our knowledge, the accuracy of CT-guided core biopsy of GGO lesions has not been reported in detail. Thus, the purpose of this study was to evaluate the diagnostic accuracy of CT-guided core biopsy of GGO lesions. Materials and Methods Our institutional review board approved this study and waived informed patient consent. Study Population and Biopsy Indication We retrospectively reviewed the medical and imaging records of all patients who underwent CT-guided needle biopsy of pulmonary nodules at our institution between June 1, 2003, and April 30, 2006. Two chest radiologists who had 8 and 12 years of experience in chest CT interpretation identified GGO lesions on CT by consensus. Images were displayed with a lung window setting (center, –600 H; width, 1,500 H). The GGO components were semiquantitatively classifie