Mass examination of laryngeal cancer has been attempted only in a few area in this country. From May to July in 1984, our mass examination for early detection of glottic cancer and other diseases of the vocal fold was performed in co-operation with eight health centers, twenty four E. N. T. clinics and a local press in Fukui prefecture.
Six hundred and eleven patients, who complained of hoarseness, underwent the examination. They consisted of 343 males and 268 females. Age distribution of the patients was 68 in thirties, 211 in fourties, 260 in fifties, 75 in sixties, 50 in seventies, 6 in eighties and 1 in nineties.
Seven males (1.2%) of the glottic cancer and eight males of precancer (seven hyperkeratosis and one leukoplakia) were found among the 611 patients. In these laryngeal cancers, six cases were T1a of early stage and one was T3 in the classification by Intenational Union Against Cancer (UICC).
Other 596 patients distributed to 296 chronic laryngitis, 60 acute laryngitis, 66 laryngeal polyp, 41 Rienke's edema, 55 laryngeal nodule and others.
We achieved our purpose by early detection of six glottic cancers in this mass examination, and look foward to the examination same as ours in other prefectures.