[Invasive squamous cell carcinoma of the uterine cervix three years after cryosurgical treatment of a benign ectopy (author's transl)].

Report on a 33 years old para 4, who developed invasive squamous cell carcinoma of the cervix three years after cryosurgery for a large ectopy of the ectocervix. The carcinoma developed under an intact layer of normal superficial epithelium. The pap smears were negative at yearly intervals until a positive smear was obtained from a small iodinenegative area. Cases following cryosurgery appear to require careful follow-ups.