[Cervical cancer screening: past--present--future]

Office Cervicoscopy versus Stationary Colposcopy in Suspicious Cervix: A Randomized Controlled Trial

Study Objective:

The objective of the study was to estimate the diagnostic accuracy and doctor satisfaction of small caliber office cervicoscopy versus stationary colposcopy in diagnosis of ectocervical as well as endocervical lesions in women clinically presented with suspicious cervix.

Patients and Methods:

Eligible 112 cases with clinically suspicious cervix were randomized into Group A (56 cases) and Group B (56 cases) who were subjected to small caliber office cervicoscopy and stationary colposcopy, respectively. The outcome was the diagnostic accuracy and safety of both tools for detection of ectocervical and endocervical cervical lesions.

Results:

There was no statistically significant difference between both groups regarding parity, previous abortion, age at marriage, duration of marriage, and age at menarche and menopause. On unaided naked eye examination of the cervix (UNEE), there were no statistically significant differences between both groups. Diagnostic indices were similar in both groups apart from the finding that office cervicoscopy was more sensitive for detection of endocervical abnormalities. Doctors were significantly more satisfied with stationary colposcopy than office cervicoscopy.

Conclusions:

Office cervicoscopy is a good complementary tool added to stationary colposcopy for detection of cervical lesions in cases with suspicious cervix as an example of high-risk group for cervical cancer. Due to its small caliber, cervicoscopy offers a better evaluation of the endocervical canal, especially in cases of Type 2 and 3 transformation zone with a possibility of examination of the endometrial cavity.

Cervical Cancer Screening Programs in Europe: The Transition Towards HPV Vaccination and Population-Based HPV Testing

Cervical cancer is the fourth most frequently occurring cancer in women around the world and can affect them during their reproductive years. Since the development of the Papanicolaou (Pap) test, screening has been essential in identifying cervical cancer at a treatable stage. With the identification of the human papillomavirus (HPV) as the causative agent of essentially all cervical cancer cases, HPV molecular screening tests and HPV vaccines for primary prevention against the virus have been developed. Accordingly, comparative studies were designed to assess the performance of cervical cancer screening methods in order to devise the best screening strategy possible. This review critically assesses the current cervical cancer screening methods as well as the implementation of HPV vaccination in Europe. The most recent European Guidelines and recommendations for organized population-based programs with HPV testing as the primary screening method are also presented. Lastly, the current landscape of cervical cancer screening programs is assessed for both European Union member states and some associated countries, in regard to the transition towards population-based screening programs with primary HPV testing.

Protection against squamous cell carcinoma and cervical adenocarcinoma afforded by cervical cytology screening: a cross-sectional study

OBJECTIVE

The objective of this study was to evaluate the impact of cervical cytology screening on the prevalence of cervical cytological results in women, as a function of age and test interval.

METHODS

This is a cross-sectional study of cytology screening data of 2,002,472 tests obtained from previously screened women and 217,826 tests from unscreened women. The central cytopathology laboratory database was analyzed. The tests were collected for screening purposes from Campinas metropolitan region, Brazil. A prevalence ratio (PR) with a 95% confidence interval was calculated for the screened women, in relation to the unscreened women, and for different tests intervals. Protection afforded by screening (1-PR) was calculated.

RESULTS

For high-grade squamous intraepithelial lesion, the PR was 0.97 (0.83-1.13) for women aged 20 years or younger and 0.99 (0.86-1.14) for women aged 20 to 24 years, decreasing significantly in women aged 25 to 29 years (PR, 0.63 [0.52-0.76]). The PR for squamous cell carcinoma, adenocarcinoma in situ (AIS), and invasive adenocarcinoma showed a significant reduction in all age groups older than 30 years. For the age group ranging from 30 to 59 years, protection for squamous cell carcinoma, AIS, and invasive adenocarcinoma was 83% or higher for screening intervals from 1 to 5 years. Protective effect was not demonstrated for screening intervals longer than 5 years for AIS and invasive adenocarcinoma.

CONCLUSIONS

Cytology screening is effective at preventing cytological high-grade squamous intraepithelial lesion, squamous cell carcinoma, AIS, and invasive adenocarcinoma. On the basis of cytological results, protection against AIS and invasive adenocarcinoma was observed with screening intervals shorter than 5 years. Cytological screening in women 25 years or younger should be critically evaluated.

Prior knowledge of HPV status improves detection of CIN2+ by cytology screening

OBJECTIVE

The objective of the study was to investigate whether knowledge of human papillomavirus (HPV) deoxyribonucleic acid test results increases sensitivity of guided cytology screening for the detection of cervical intraepithelial neoplasia (CIN)-2 or higher-grade cervical lesions.

STUDY DESIGN

This was a prospective colposcopy-controlled study of 2905 BD SurePath samples to identify cases with CIN2+ within a 24 month follow-up period. Sensitivity and specificity to detect CIN2+ was evaluated, comparing guided cytology screening with and without prior knowledge of HPV status.

RESULTS

Prior knowledge of HPV status resulted in significantly higher detection rate of CIN2+ compared with screening blinded to HPV status (P = .005) with limited loss of specificity (P = .026). Gain in sensitivity is higher in older women (43.8%, P = .008) vs in younger women (10.2%, P = .317), whereas loss of specificity is more pronounced in younger women (P < .001) vs older women (P = .729).

CONCLUSION

Guided cytological screening performed with prior knowledge of HPV status results in an improved detection of CIN2 or higher-grade lesions.