title: [Fine-needle aspiration biopsy under CT-guidance--usefulness in diagnosis of malignant lung tumors].
abstract: Aim of the study was to evaluate the usefulness of fine-needle aspiration biopsy (FNAB) in diagnosis of malignant lung tumors.
  
  
  METHODS
  The results of 438 CT guided FNAB of lung lesions performed between Sep. 1st 1999 and Feb. 20th 2004 were evaluated.
  
  
  RESULTS
  In 295 cases (67.35%) the cytological diagnosis of lung tumours were established by FNAB. The most common type of the tumours were: non-small cell lung cancer: 222 (50.69%) and small cell lung cancer: 49 (11.19%). 104 of these results were histologically verified and two false positive results were detected. In 143 cases (32.65%) however, the results established by FNAB were non-diagnostic. 63 of the lesions were verified and in 36 cases (57.1%) the malignant tumours were proved. The specificity of the method regarding malignant lesions reached 93.10%, and its sensitivity for patients with malignancy was 73.91%. The average diameter of the malignant tumour was 5.4+/-1.3 cm whereas in case of non-diagnostic results the diameter of the tumour was 4.1+/-1.6 cm. However, there was no significant difference between the two groups. The most common complication of FNAB was pneumothorax, which occurred in 22 patients (5.02%) and in 13 cases (2.97%) required drainage of the chest cavity.
  
  
  CONCLUSIONS
  FNAB is a safe diagnostic method with high specificity and moderate sensitivity in detecting of malignant lung lesions.
authors.affiliation: Klinika Chirurgii Klatki Piersiowej i Nowotworów AM w Bydgoszczy.
authors.forename: Janusz
authors.initials: J
authors.lastname: Kowalewski
authors.forename: Jan
authors.initials: J
authors.lastname: Sir
authors.forename: Maciej
authors.initials: M
authors.lastname: Dancewicz
authors.forename: Joanna
authors.initials: J
authors.lastname: Swiniarska
authors.forename: Janusz
authors.initials: J
authors.lastname: Pepliński
mesh_terms: D000328:Adult; D000368:Aged; D044963:Biopsy, Fine-Needle / Q000379:methods*; D002289:Carcinoma, Non-Small-Cell Lung / Q000000981:diagnostic imaging / Q000473:pathology*; D018288:Carcinoma, Small Cell / Q000000981:diagnostic imaging / Q000473:pathology*; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed