Abstract
Cervical intraepithelial neoplasia (CIN) can be managed by ablative or excisional procedures. We have compared the excision time, effectiveness, and safety of loop diathermy (loop) against laser conization. In a prospective study in two hospital departments 222 women were randomized to loop or laser conization. Data were collected by questionnaires after operation and at two follow-up examinations. At department A (122 women), two physicians performed 27% of the loop and 35% of the laser excisions; at department B (100 women), the corresponding figures were 69% and 59%. Loop was quicker than laser conization in both departments (median 3-4 min versus 10-20 min), while laser conization was more time consuming in department A (median A/B = 20/10 min). Peroperative bleeding dominated during the laser procedure in both departments and complicated the loop procedure more frequently in department A. Postoperative bleeding occurred with equal frequency in the four groups (41.8%, 52.7%, 59.2%, 64.7%). At both departments, bleeding for more than two weeks was reported twice as often after laser conization (A:13.8%, B:24.2%), when compared to loop excision (A:7.1%, B:13.7%). Residual CIN was found in all of three re-conizations and in one of eight hysterectomy specimens. Loop was quicker than laser excision, per- and postoperative bleeding diminished, and the success rates were comparable. Physicians mastered Loop excision after a few attempts. However, the results improved, when performed by a restricted number of physicians. Histological incomplete excision indicates close colposcopic and cytologic follow-up to identify residual CIN.
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