Introduction:
The treatment of precancerous changes in the cervix is the base of secondary prevention of cervical cancer and is a part of most national programs for the prevention of the disease.

Aim of the research:
To perform a frequency analysis of histological results after large loop excision of the transformation zone (LLETZ) for cervical precancerous lesions in an outpatient setting.

Material and methods:
From 1 January 2017 to 31 July 2021, 189 patients underwent Medical Centre “Prof. Kornovski”. The methodology includes the indications for performing the LLETZ procedure, a description of the procedure, the tools and technical parameters, the operation technique, and the histological examination.

Results:
We present a histological analysis of the preparations after LLETZ, the frequency of glandular involvement in the pathological process, the incidence of thermal damage of the resection lines after the procedure, and the incidence of involvement of carcinoma or high-grade squamous intraepithelial lesion of resection lines after LLETZ.

Conclusions:
The LLETZ procedure can be diagnostic for the detection of invasive carcinoma in menopausal women, clinically and colposcopically suspected of invasion, but with negative histology from the targeted biopsy. Intra-glandular spread is a sign of high-grade dysplasia and cervical carcinoma in situ. Thermal damage to resection lines is a consequence of LLETZ. These lesions do not compromise the assessment of the resection lines. This shows the possibilities of applying the LLETZ procedure for diagnosing and treating cervical pathologies.