Early stromal invasion of the vulva

151 vulvectomy operation specimens and 154 biopsies from the vulva were examined. They represented either dysplasias, carcinomata in situ or invasive squamous cell carcinomas. 17.4% of the cases showed early stromal invasion as well in dysplasias and carcinomata in situ as in the margins of the invasive carcinomas. On the other hand the early stromal invasion of the vulva does not show such striking alterations as does that of the cervix uteri.