[Diagnostic reliability of pre-biopsy methods (colposcopy and cytology) in predicting the histological basis of cervical lesions].

The more frequent incidence of cancer of the uterine cervix and thus of precanceroses in younger age groups, the introduction of new therapeutic methods (cryotherapy, CO2 laser, modernized diathermocoagulation) call for an estimate of the histological basis of the cervical lesion and in precanceroses assessment of its grade. These data must be provided by prebioptic methods (cytology and colposcopy). This diagnosis is essential to provide optimum therapy under the given circumstances. During the two-year period of 1985-1986 at the Gynaecological Clinic in Plzen 308 women detected by cytological screening were examined who were subsequently operated on account of a cervical lesion. In the investigated group a prebioptic predicition of high reliability was made. A concordant finding was recorded in 286 women, i.e. 92.9%. False negative, i.e. so-called risk errors were made in 9 women, i.e. 2.9%. False positive errors without risk, where the only consequence was unnecessarily radical treatment, were made in 13, i.e. in 4.2% women.