抄録
A Clinical investigation was performed on 28 cases of vocal cord nodule (V. C. N.), 231 cases of vocal cord polyp (V. C. P.) and 65 cases of polypoid vocal cord (Polypoid V. C.). Of all the cases, 162 were male and the same number were female. All of the male cases with V. C. N. were under 14 years old, while 83% of the female cases were over 20 years old. Of the patients with V. C. P., 81% were in the thirties, forties, and fifties. Of the patients with polypoid V. C., 66% were in the forties and fifties. The incidence of bilateral ceses were 93% in V. C. N., 89% in polypoid V. C. and 29% in V. C. P. The average duration of the symptoms was 18 monthes in V. C. N., 24 months in V. C. P. and 123 months in polypoid V. C. The incidence of the smoking in the adult patients was high in all three diseases, especially polypoid V. C. The incidence of vocal abuse was relatively high in V. C. N.
