title: Ultrasound-guided fine-needle aspiration biopsy of lung cancers.
abstract: One hundred eighty-eight patients with 191 lung cancers were collected retrospectively to evaluate the diagnostic results and to determine the accuracy of cytologic diagnoses obtained from ultrasound-guided fine-needle aspiration biopsy (US-guided FNAB), and to discuss the necessity of large-bore tissue core needle biopsy. All 188 patients underwent US-guided FNAB, and 20 patients with 21 lung tumors also underwent US-guided tissue-core needle biopsy. Using US-guided FNAB alone, the positive cytologic results and correct cytologic diagnoses were 91% (174 of 191) and 71% (37 of 52). If both US-guided FNAB and selected US-guided tissue core needle biopsy (n = 21) were evaluated, the positive cytologic or histologic results and correct cytologic or histologic diagnoses were 94% (180 of 191) and 80% (45 of 57), respectively. Analyzing the disagreement between the cytologic results and histologic diagnoses (n = 15), we found that the disagreement usually occurred in the specimens with poorly differentiated carcinomas (nonspecific cell type) (53% [8 of 15]); of these, two patients (13% [2 of 15], small cell carcinoma) would have a change in treatment. The complications of US-guided FNAB were pneumothorax (n = 3), hemoptysis (n = 1), hemothorax (n = 1), and suspected tract metastasis (n = 1). We conclude that US-guided FNAB has a high diagnostic yield in lung cancers, and US-guided tissue core needle biopsy is only necessary in patients whose cytologic results are negative or who have poorly differentiated carcinomas.
authors.affiliation: Department of Internal Medicine, Taichung Veterans General Hospital, Taiwan, Republic of China.
authors.forename: W H
authors.initials: WH
authors.lastname: Hsu
authors.forename: C D
authors.initials: CD
authors.lastname: Chiang
authors.forename: J Y
authors.initials: JY
authors.lastname: Hsu
authors.forename: P C
authors.initials: PC
authors.lastname: Kwan
authors.forename: C L
authors.initials: CL
authors.lastname: Chen
authors.forename: C Y
authors.initials: CY
authors.lastname: Chen
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001707:Biopsy, Needle / Q000009:adverse effects / Q000379:methods*; D006469:Hemoptysis / Q000209:etiology; D006491:Hemothorax / Q000209:etiology; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008175:Lung Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology*; D008875:Middle Aged; D011030:Pneumothorax / Q000209:etiology; D012189:Retrospective Studies; D014463:Ultrasonography