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BACKGROUND: Cervical cancer is one of the four most common cancers today and is the second most common cancer among women in developing countries. According to World Health Organization estimates, in 2018, the number of new cases in these countries was 570,000 (84% of all new cases globally). About 311,000 women died of cervical cancer in 2018, with more than 85% of these deaths occurring in low- and middle-income countries. The detection of the disease in its later stages has not significantly reduced since 2018 (32.6% of all cases). AIM: The aim of this study was to compare the information contents of conventional and liquid cytology methods in women with verified human papillomavirus of high oncogenic risk. MATERIALS AND METHODS: We retrospectively analyzed 50 outpatient records of women aged 23 to 65 years who underwent colposcopy (cervical biopsy) based on the results of cervical screening. To establish the diagnosis, all patients underwent examination of smears from the cervix and cervical canal using conventional (n = 25) and liquid (n = 25) cytology methods. A molecular genetic study was carried out to detect high-oncogenic human papillomavirus types (16, 18, 31, 33, 35, 45, 51, 56, 58) in scraping of the cervix by real-time polymerase chain reaction. Women in the both study groups also underwent colposcopy with histological examination of the cervical biopsy specimen. The analysis of the obtained data was carried out using methods of parametric and nonparametric statistics. Inclusion criteria included cytological examination, verified human papillomavirus of high oncogenic risk, and colposcopy. Exclusion criteria included pregnancy and acute infectious diseases. RESULTS: According to the results of histological examination, the percentage of coincidence of cytological and histological diagnosis in the group of women who underwent conventional cytological examination was 48%. The total number of discrepancies in this group was 13 (52.0 9.99%). The number of women infected with human papillomavirus in the both study groups was almost the same (18 in the conventional cytology group and 19 in the liquid cytology group). The most common types of human papillomavirus among the examined patients were the 16th type (9 women) and the 18th type (6 women). CONCLUSIONS: To date, cytological research methods have not lost their relevance, the liquid cytology method being a reliable screening test with high specificity, which reduces the number of unsatisfactory preparations for analysis and false negative results. The most informative for women with type 2 or type 3 of transformation zone is the use of the liquid cytology method.
BACKGROUND: Cervical cancer is one of the four most common cancers today and is the second most common cancer among women in developing countries. According to World Health Organization estimates, in 2018, the number of new cases in these countries was 570,000 (84% of all new cases globally). About 311,000 women died of cervical cancer in 2018, with more than 85% of these deaths occurring in low- and middle-income countries. The detection of the disease in its later stages has not significantly reduced since 2018 (32.6% of all cases). AIM: The aim of this study was to compare the information contents of conventional and liquid cytology methods in women with verified human papillomavirus of high oncogenic risk. MATERIALS AND METHODS: We retrospectively analyzed 50 outpatient records of women aged 23 to 65 years who underwent colposcopy (cervical biopsy) based on the results of cervical screening. To establish the diagnosis, all patients underwent examination of smears from the cervix and cervical canal using conventional (n = 25) and liquid (n = 25) cytology methods. A molecular genetic study was carried out to detect high-oncogenic human papillomavirus types (16, 18, 31, 33, 35, 45, 51, 56, 58) in scraping of the cervix by real-time polymerase chain reaction. Women in the both study groups also underwent colposcopy with histological examination of the cervical biopsy specimen. The analysis of the obtained data was carried out using methods of parametric and nonparametric statistics. Inclusion criteria included cytological examination, verified human papillomavirus of high oncogenic risk, and colposcopy. Exclusion criteria included pregnancy and acute infectious diseases. RESULTS: According to the results of histological examination, the percentage of coincidence of cytological and histological diagnosis in the group of women who underwent conventional cytological examination was 48%. The total number of discrepancies in this group was 13 (52.0 9.99%). The number of women infected with human papillomavirus in the both study groups was almost the same (18 in the conventional cytology group and 19 in the liquid cytology group). The most common types of human papillomavirus among the examined patients were the 16th type (9 women) and the 18th type (6 women). CONCLUSIONS: To date, cytological research methods have not lost their relevance, the liquid cytology method being a reliable screening test with high specificity, which reduces the number of unsatisfactory preparations for analysis and false negative results. The most informative for women with type 2 or type 3 of transformation zone is the use of the liquid cytology method.
Objective: To assess the clinical results of cervical intraepithelial neoplasia (CIN) treatment following the outcomes of the first pilot implementation of visual screening in the Republic of Tajikistan. Methods: The study was conducted from 2016 to 2020. The piloting included the population of two large districts of Kushoniyon and B. Gafurov, with a total number of 608,700 people, which is 6.74% of the country's total population. The target group of this screening included healthy women aged 30-49 years, numbering 72574 people. As a result of communication campaigns with the target group of both districts, 69391 women participated in visual screening; the overall screening coverage was 94.2%. Of the 2958 women referred for diagnosis, in 164 cases (0.24%) CIN was identified and morphologically confirmed. Results: Tajikistan, along with piloting imaging screening, has adopted a "detection-diagnosis-treatment" strategy, which involves treatment after histological confirmation of CIN. Additionally, electrosurgical loop excision/conization was adopted as the primary method, regardless of the degree of CIN involvement. Patients with CIN in 136 (82.9%) cases underwent electrosurgical loop excision, in 21 cases – conization (12.8%), and in 7 (4.3%) cases, at the insistence of the women themselves – hysterectomy. In the long-term follow-up period from 6 months to 2 years, in 159 (96.9%) cases, a favorable course of CIN was noted after the above procedures, and in 5 (3.1%) cases, relapse occurred. Patients with relapses received re-surgical treatment using electrosurgical excision/conization with a satisfactory outcome. Conclusion: The "detection-diagnosis-treatment" strategy adopted by Tajikistan has shown its high efficiency in detecting precancerous pathology and the success of CIN treatment by electrosurgical excision/conization, which contributes to the healing of the population from precancerous pathology. Keywords: Cervical intraepithelial neoplasia, visual screening, VIA/VILI visual method, colposcopic examination, electrosurgical loop excision/conizatio.
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