The Use of Visual Tests in the Screening Strategy of Cervical Dysplasies and Cervical Cancer at the Laquintinie Hospital Douala, Cameroon: A Cross-Sectional Study

Abstract

Introduction: The prevalence of cervical cancer in Cameroon is 80.73/100,000 women, with an estimated incidence of 40/100,000 women-years. It is a real public health problem. There is no systematic and effective screening program for cervical cancer in our country, despite the advent of visual tests that are simple to use, low cost, and adapted to the modest income of our social groups. Objectives: We aimed at determining the usefulness and place of visual tests in screening for cervical dysplasia and cervical cancer for its implementation at the Laquintinie Hospital Douala, Cameroon. Methods: We conducted a prospective analytic cross-sectional study of cervical dysplasia and cervical cancer screening by visual testing at the Laquintinie Hospital Douala from December 1, 2016 to March 31, 2017. Data collection was by consecutive non-probabilistic method and consenting sexually active women older than 21 years were enrolled for study. Data analysis was with Epi InfoTM version 7. Associations were done with the Chi square, student t-test and Fischer’s exact test where appropriate. Bivariate and multivariate analysis was done and reported as odd ratios, adjusted odd ratios and 95% confidence intervals. Statistical significance was set at P < 0.05. Results: We received 1590 women, of whom 1506 (94.7%) screened for dysplastic lesions and cervical cancer during the study period. The results obtained were: 1417 (94.1%) had a normal result; 64 (4.2%) had a positive visual test (TV+); and 25 (1.7%) visual tests were inconclusive (TV-nC). Of the 64 women whose visual tests were positive, 15 (23.5%) were HIV+. We performed 80 colposcopies and biopsies, including 61 women with positive visual tests and 19 non-conclusive visual tests. Among women with TV+, we found 06 cancers (squamous cell carcinoma: 05, adenocarcinoma: 01) and 05 dysplasias (CIN1: 04, CIN3: 01). Histological examination in women with TV-nC revealed 02 dysplasias (CIN1: 02). Half of the women with cervical cancer were HIV+. In our series, the prevalence of cervical dysplasia and cervical cancer was respectively 05 per 1000 women and 04 per 1000 women. The early onsets of sexual intercourse and co-infection with HIV were the main factors associated. Visual tests were very sensitive (84.62%), but with a relatively low specificity (25.37%). Conclusion: Visual tests prove to be a useful tool for mass screening of precancerous and cancerous lesions of the cervix in view of its sensitivity, cost and performance.