The present paper communicates an observation of a squamous cell carcinoma of the corpus uteri at the base of an ichthyosis uteri. The ichthyosis uteri developed over a period of just three years from a discrete squamous cell metaplasia of the endometrial body in the presence of slight nonspecific endometritis. It is recommended that when ichthyosis uteri is detected the uterus should be removed, since the changes cannot be eliminated by curettage and there is a risk of malignant degeneration within a relatively short time.