Nondiagnostic Percutaneous Transthoracic Needle Biopsy of Lung Lesions: A Multicenter Study of Malignancy Risk

The nondiagnostic results from percutaneous transthoracic needle lung biopsies show that malignancy risk differs in each nondiagnostic lung lesion category with the highest risk among atypical cells, followed by insufficient specimen and nonspecific benign categories.