Retrospective Study of 971 Cases Undergone Laryngomicrosurgery for 9 Years.

In this paper, we reported a clinical statistics of 971 cases who have undergone laryngomicrosurgery in University of Tokyo Hospital during last 9 years. Vocal fold polyp, polypoid vocal fold, laryngeal cancer and vocal fold nodule are of higher incidence.Most of vocal fold polyps were seen in patients of the third to fifth decade of their age. There is no apparent sex difference. Duration of symptoms is less than 1 year. It is suggested that smoking, vocal abuse and drinking habit seem to be causative factors.Vocal fold nodules were frequently seen in female patients of the second decade. On the other hand, all male patients were under 10 years old. Almost all patients have habitual vocal abuse.Patients with polypoid vocal fold were in the fifth decade of their age. There is no sex difference in incidence. Duration of symptoms was comparatively long. It is suggested that smoking, habitual vocal abuse and drinking are contributing factors to produce polypoid changes in the vocal fold.