title: Lung lesions: cytologic diagnosis by fine-needle biopsy.
abstract: Small-bore (22- or 23-gauge) needles were used to aspirate 458 lung masses. Sensitivity for the detection of malignancy by this method was 96.6% (312 of 323 patients); accuracy was 98.7%. Surgical confirmation was available for comparison in over half of patients with malignancy. Histologic reclassification of malignancy occurred in only 6.1% of patients, with significant misclassification (misdiagnosis of small cell carcinoma) occurring in only two instances. One hundred thirteen of 117 nonmalignant conditions were properly categorized, with an overall specificity of 96.6%. No major complication occurred. While several recent studies have stressed the advantage of using larger needles, to overcome the limitation of smaller aspiration needles that provide only cytologic material, small-needle aspiration appears to be a safe, reliable, and accurate means for diagnosing lung lesions.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001707:Biopsy, Needle / Q000009:adverse effects; D003581:Cytodiagnosis; D006801:Humans; D008171:Lung Diseases / Q000175:diagnosis*; D008175:Lung Neoplasms / Q000175:diagnosis*; D008875:Middle Aged