A Study of the Carcinogenesis Time and Incidence of Carcinoma in 46161 cases With Normal Hyperplastic Esophageal Epithelia

The carcinogenesis time and incidence of carcinoma of 46161 cases with nor-mal，slight hyperplastic and severe hyperplastic esophageal epithelia were studied. The results indicated that the average time of esohpageal carcinogenesis in the cases with severe hyperplastic，slight hyperplastic and normal esophageal epithelia were months，respectively;The incidence of esophageal carcinoma in the cases with severe hyperplastic，slight hyperplastic and normal esophageal epithelia were respectively.