mild to moderate dysplasia was most frequent in women 25 to 29 years of age ( prevalence rate , 25.7/1000 ) , severe dysplasia and carcinoma in situ in women 35 to 39 years of age ( prevalence rate , 4.6/1000 ) , and invasive carcinoma in women older than 50 years of age ( prevalence rate , 0.47/1000 ) .
C0334048
severe dysplasia
C0007099
carcinoma in situ