Abstract: Thirty - eight patients peripheral lung rnass Undement CT or radioscopy guided authetic sp-ing fine - needle biopsy. ixstolgic study revealed maltot pubo mass in 24 patients accimcy 92. 3 %, be-nign pulmonary rnass in 11 patients accuxacy 91. 7 %. hang the twtomption pnemothorax occurred in 2 patients(5. 3 % ). bldriy sputUm occLirred in 2 pahents (5. 3 % ). Thus, X -ray assisted radioscopy or CT - guidedPulmonary biopsy esp, the latter shows high acuracy and safty ect. It plays an bo role in the dignosis of Pe-ripheral as.