[Value of conization in the therapy of carcinoma in situ].

The volumes of cone biopsies of 156 patients with primary diagnosed carcinoma in situ of the cervix uteri were compared with the histological findings of cone biopsies and subsequent cervicectomy. The therapeutic result did not depend essentially on the size of cone biopsy, but rather on including the transitional area and endocervical epithelium together with electrocoagulation. The coagulation produces a security zone which significantly increases the effective volume of the cone biopsy.