Adequacy and complications of computed tomography-guided core needle biopsy on non-small cell lung cancers for epidermal growth factor receptor mutations demonstration: 18-gauge or 20-gauge biopsy needle

CT-guided core needle biopsy is a feasible technique in acquisition of fresh cancer tissues for EGFR gene mutation analysis. The specimen is adequate for gene demonstration either using 18-gauge or 20-gauge tru-cut biopsy needles via 17-gauge or 19-gauge coaxial needles.