Laser miniconization in mild and moderate dysplasia of the uterine cervix.

Mass cytologic screening for cervical cancer often reveals only mild dysplasia not indicating conization but necessitating continual checkup. Such routine checkups are often insufficient, beside which the patients find them frustrating. Therefore a new method, called miniconization, for treatment of patients with vaginal smears showing mild or moderate dysplasia (cervical intraepithelial neoplasia/CIN/I-II), was developed. With the CO2 laser handpiece a 5-mm-thick disc of the cervix, including the whole transformation zone, was removed. This was followed by endocervical curettage. The advantage of the method over cryosurgery, electrocoagulation, and laser vaporization, for example, is that the tissue specimen as a whole disc including the transformation zone can be sectioned and examined histologically. Another advantage is the decreased risk of postoperative bleeding, which enables ambulant care. One hundred and fifty-one patients have hitherto been treated and carcinoma in situ has been found in 15.2% and microinvasive carcinoma in 1.3% of all these patients in whom vaginal smears showed mild or moderate dysplasia (CIN I-II).