Human papillomavirus genotype distribution in low-grade squamous intraepithelial lesion cytology, and its immediate risk for high-grade cervical lesion or cancer: a single-center, cross-sectional study

High frequency of alpha7-HPV in Colombian Caribbean coast women: cervical cancer screening analysis

BACKGROUND

Cervical cancer (CC) is a significant global public health concern, particularly in developing countries such as Colombia. The main risk factor involves high-risk HPV types (HR-HPV) infection, coupled with population-specific variables. The Caribbean region in Colombia lacks research on HR-HPV-type frequencies. Therefore, this study aims to establish the prevalence of type-specific HR-HPV and its association with sociodemographic factors among women undergoing cervical cytology screening.

METHODS

A cross-sectional study involving voluntary women who provided informed consent and completed a questionnaire capturing sociodemographic, clinical, and sexual behavior information was conducted. All participants underwent cervical cytology and molecular analysis. Generic HPV detection employed three simultaneous PCRs (GP5+/6+, MY09/11, and PU1R/2 M), and positive samples were genotyped using the Optiplex HPV Genotyping kit. The analysis encompassed the 12 types of high-risk HPV (HR-HPV-16,-18,-31,-33,-35,-39,-45,-51,-52,-56,-58, and - 59). Frequencies were reported based on geographic subregions within the Córdoba department, and disparities were made between single and multiple infections. Sociodemographic and clinical variables were subjected to ordinal logistic regression, with statistical significance at a p-value < 0.05. The statistical analyses utilized STATA 14® and R-Core Team-software.

RESULTS

We included 450 women, mean age 40 (SD±11.44). PCR analysis revealed 43% HPV-positive (n=192). GP5+/6+ detected the most positives at 26% (n=119), followed by PU1R/2 M at 22% (n = 100) and MY09/11 at 15% (n=69). Multiple infections occurred in 87.3% (n=142), primarily 2 to 4 types (47.37%, n=90). Dominant types were HPV-18 (15.6%, n=61), HPV-16 (14.9%, n=58), HPV-31 (13.0%, n = 51), and HPV-45 (11.5%, n=45). Logistic regression identified age above 60 as a risk for concurrent multiple types (OR=6.10; 95% CI 1.18-31.63). Menopause was protective (OR=0.31; 95% CI 0.11-0.89).

CONCLUSIONS

Our study reveals a notable prevalence of multiple (2-4) high-risk HPV infections among adult women engaged in CC detection initiatives. Predominantly, α7 species constitute the prevalent HR-viral types, with the Medio Sinú subregion showing elevated prevalence. Menopausal status confers protection against diverse HR-HPV infections. Nevertheless, advancing age, particularly beyond 60 years, is linked to an increased susceptibility to simultaneous infections by multiple HPV-types.

Attitude toward human papillomavirus self-sampling and associated factors among Thai women undergoing colposcopy

OBJECTIVE

To compare attitudes toward self-sampling for human papillomavirus (HPV) testing before and after specimen collection in women undergoing colposcopy. The factors associated with the pre-sampling attitude were also studied.

METHODS

This prospective study enrolled women with abnormal cervical cytology and/or positive high-risk HPV who attended colposcopy clinics at 10 cancer centers in Thailand between October 2021 and May 2022. Prior to colposcopy, the attitudes of the women toward self-sampling were surveyed through a questionnaire. Written and verbal instructions for self-sampling were provided before the process and subsequent colposcopy. The attitudes toward self-sampling were reassessed after the actual self-sampling. Factors associated with the attitudes were analyzed.

RESULTS

A total of 499 women were included in this study. The mean age was 39.28±11.36 years. A total of 85.3% were premenopause, and 98.8% had sexual experience. With the full score of 45, the attitude score after self-sampling was significantly higher than the attitude score before self-sampling (39.69±5.16 vs. 37.76±5.71; P<0.001). On univariate analysis, the factors associated with attitude before HPV self-sampling were age, menopausal status, sexual activity, education level, income, knowledge regarding HPV, and prior high-grade squamous intraepithelial lesion histology. The remaining significant factor on multivariate analysis was sexual activity within the past year (B=0.105, 95% confidence interval, 0.014-2.870; P=0.048).

CONCLUSION

Attitudes toward self-sampling improved after the actual self-sampling process, as evidenced by higher attitude scores. Sexual activity was the only independent factor related to the attitude before self-sampling.

Lugol's Solution Reduces Positive Margins and Residual Disease After the Large Loop Excision of Transformation Zone

OBJECTIVE

This study aimed to examine whether the intraoperative use of Lugol's solution reduces the proportion of positive resection margins (RMs) using the data of women who underwent large loop excision of the transformation zone (LLETZ).

MATERIALS AND METHODS

A total of 1,751 consecutive women with cervical intraepithelial neoplasia (CIN) who underwent LLETZ with or without Lugol's solution were retrospectively retrieved from each database of 3 university hospitals in South Korea. Outcomes included positive RMs and residual disease pathologically confirmed within 6 months after LLETZ.

RESULTS

Positive RMs were noted in 345 cases (19.7%). Among 1,507 women followed up, residual disease was diagnosed in 100 cases (6.6%) (69/308 cases with positive RMs; 31/1,199 cases with negative RMs). The Lugol's solution group was less likely to have positive RMs (11.8% vs 25.5%, p < .01), to require additional surgical intervention (5.4% vs 10.2%, p < .01), and to have residual disease (4.9% vs 8.0%, p = .02). On multiple logistic regression analysis, Lugol's solution reduced the proportion of positive RMs (adjusted odds ratio [aOR], 0.31). Age (50 years or older; aOR, 1.64), preconization cervical cytology (aOR, 1.53), high-risk human papillomavirus (aOR, 1.75), and CIN 2 or 3 (aOR, 2.65) were independent risk factors for margin positivity ( p < .01 for all except high-risk human papillomavirus of p = .05).

CONCLUSIONS

Lugol's solution optimizes CIN treatment by reducing the proportion of positive RMs and residual disease after LLETZ.