Laser excisional conization and laser vaporization for cervical intraepithelial neoplasia.
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Endometrial curettage at the time of conisation is often performed as a routine procedure, even when indication for this treatment is rather unclear. 593 conisations including curettages were performed at the I. Department of Obstetrics and Gynaecology, of the University of Vienna and were evaluated retrospectively. Only 3 patients with a mild endometrial hyperplasia were found. Therefore, in our opinion, there is no indication for a curettage at the time of conisation, if a woman is under the age of 35 years and if there is no other specific indication for sampling the endometrium, based on high risk factors, physical examination, history or abnormal glandular cells found on cervical cytology. Such management would result in reducing the costs and the risk of infection in intrauterine operations.
The influence of cold knife conisation on further progression of pregnancy was analysed in 28 patients, who underwent the operation during pregnancy. 13 women were operated on within the first 16 weeks of gestation (group I) and were compared to 15 patients, where conisation was done in the 17th week or later (group II). In the first group, deliveries were found in the 39th week of pregnancy compared to 34 weeks in the second group (p.05). A statistical significant difference concerning the further duration of pregnancy after conisation was found: 25 weeks in group I vs. 11 weeks in group II (p. 0012). There was no difference, however, in radicality whether conisation was done in early or late pregnancy. Our final conclusion is, that a preterm delivery occurs significantly more often in women who underwent conisation after 16th week of gestation.
Various methods of tissue sampling are used to verify histologically a clinical carcinoma of the cervix. The question arises whether or not diagnostic cone biopsy has any influence on the treatment and/or the clinical course of this disease. The clinical and histological data and the follow-up of 185 patients with squamous cell carcinoma of the cervix were statistically evaluated. We found no difference between patients with or without cone biopsy in respect of complications, frequency of metastases or recurrences, and survival. However, our deliberations permit the following statement: cone biopsy is an appropriate method to diagnose cervical intraepithelial neoplasia (CIN) or microcarcinoma of the cervix and may--under certain conditions--even be the adequate therapy. However, cone biopsy lacks any advantage over other diagnostic methods if it is employed merely for the purpose of histological verification of clinical carcinoma of the cervix.
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.
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