抄録
This is a report on a case in which a one inch U-shaped nail continued to stay in the right bronchus for about a year, and it was found by author. In the first two operations a bronchoscope improved by Ono was used peroral tracheobronchoscopically. In the first operation only granulation was found but not the foreign body ; in the second operation however, the foreign body was caught by Robert's clamp under the biplane fluoroscopy. But, fearing danger in its blind handling, the operation was stopped because of bleeding. In the third operation the foreign body was recognized percervial tracheoscopically by the Killian's bronchoscope and it was taken out without any danger in spite of some bleeding.
After the operation more investigation was done on the following points: why there were no supjective symptoms for about a year, the problem of the advantage in the tracheobronchoscopy through a tracheastoma, the comparison of the Killian's bronchoscope and Ono's bronchoscope, and moreover, the reasons for failure and success in the operations.
