Abstract
Bronchoscopy and cytology are important measures in diagnosis of lung cancer as well as radio graphy. At Aichi Cancer Hospital, all cases suspicious for lung cancer on x-ray study are examined with bronchoscopy under general anesthesia and also scratch cytology utilizing a small brush. One hundred ninety four cases of lung cancer were studied with bronchoscopy under general enesthesia.It was found that a controlled ventilation was most suitable for the anesthesia
A correct diagnosis was obtained in 72.9%of the case by the scrach cytology. If those cases were divoided by the “Bronchoscopic type”, “Radiographic type” or “Localization of origination”, the best diagnostic resslts wera obtained at solid tumor type, hilar type and at tumor originated from the stem of bronchus.
A satisfactory result was not obtained in cases located at periphery of the lung on radiogram.
A positive diagnosis, however, was obtained in 97.1%of the cases of tumor in the stem of bronchus, 80.0% in the periphery of bronchus and 88.6%in total cases by cytogy associated with exforiative and transthoracic cytology as scratch methode.
False negative cases should be carefully to elucidate the cases of error. A combined use of flexible fiberbronchoscopy, transthoracic cytology, thoraco scopy and mediastinoscopy should be con sidered to obtained better diagnostic result.
