Two-stage cervical cancer screening: an alternative for resource-poor settings

Area of Science:

• Gynecology
• Oncology
• Public Health

Background:

• Cervical cancer remains a significant global health issue, particularly in low-resource settings.
• Conventional screening methods often face challenges with accessibility, cost, and accuracy.
• There is a need for innovative and efficient screening strategies to improve early detection and treatment.

Purpose of the Study:

• To evaluate the efficacy of a two-stage cervical cancer screening protocol.
• To compare the performance of sequential screening tests against single-test approaches.
• To assess the potential of two-stage screening in reducing false-positive results and improving resource allocation.

Main Methods:

• A study involving 1423 women in Cape Town, South Africa.
• Sequential screening using direct visual inspection (DVI) as the first stage, followed by human papillomavirus (HPV) DNA testing, cytologic testing, or cervicography if DVI was abnormal.
• Referral for colposcopy was based on abnormal results from any screening test.

Main Results:

• Single tests identified varying numbers of disease cases and a significant number of false positives.
• Two-stage screening with DVI followed by HPV testing, cytology, or cervicography detected 16-18 cases per 1000 women.
• The two-stage approach substantially decreased the number of women without disease being incorrectly classified as abnormal.

Conclusions:

• Two-stage cervical cancer screening offers an effective and resource-efficient alternative to conventional methods.
• This strategy holds significant promise for improving cervical cancer control in resource-limited environments.
• The sequential testing model enhances diagnostic accuracy and optimizes patient management.