
Cervical Cancer Screening — HPV, VIA & the Pathway to Treatment
Cervical cancer is almost entirely caused by persistent infection with high-risk human papillomavirus (HPV); it develops slowly through pre-cancer stages, so screening can find and treat it before it becomes cancer
Worldwide in 2020, more than 500,000 women were diagnosed and about 342,000 died, mostly in poorer countries (WHO)
WHO now recommends an HPV DNA test as the preferred screening test, from age 30, repeated every 5 to 10 years; women living with HIV start at 25 and are screened every 3 to 5 years
India’s national framework screens all women aged 30 to 65 with VIA (visual inspection with acetic acid) once every 5 years, done by the ANM or staff nurse
Screening works only with follow-up: every positive woman must reach treatment
HPV vaccination of girls, with screening, is the route to eliminating cervical cancer
| Group | Test | Start and repeat |
|---|---|---|
| General population (WHO 2021) | HPV DNA test, with screen-and-treat or screen-triage-treat | From 30 years; every 5 to 10 years |
| Women living with HIV (WHO 2021) | HPV DNA test with a triage test if positive | From 25 years; every 3 to 5 years; retest sooner after a positive result or treatment |
| India, national framework | VIA (visual inspection with acetic acid) | All women 30–65 years; once every 5 years |
| Self-sampling (WHO) | Self-collected sample for HPV DNA testing | May help more women to be screened; she needs clear instructions and support |
HPV DNA test: detects high-risk HPV in a cervical or vaginal sample; objective, so it needs less interpretation than VIA or cytology, and is more effective and cost-effective, according to WHO
VIA: the cervix is washed with 3–5% acetic acid; a well-defined white patch near the squamocolumnar junction is a positive result (from memory)
Pap smear (cytology): cells are collected, stained and read by a cytologist, using the Bethesda system (from memory)
Triage after a positive HPV test: HPV 16/18 genotyping, VIA, cytology or colposcopy, according to what is available (from memory)
Colposcopy with biopsy confirms the grade of any lesion; histology gives the final diagnosis
Ablative treatment (cryotherapy or thermal ablation) when the whole lesion is visible and does not extend into the cervical canal, and there is no suspicion of cancer (criteria from memory)
LEEP or cold-knife conisation when the lesion is larger, reaches into the canal, or ablation is not suitable (from memory)
Suspected invasive cancer: biopsy and refer to a cancer centre
In India, the medical officer at the PHC, CHC or district hospital manages VIA-positive women, with cryotherapy or colposcopy and biopsy, and the ANM and sub-centre staff arrange follow-up
Treat on the same visit where possible, so she is not lost (from memory)
Test again after treatment to check that it worked; women living with HIV are retested sooner
Check healing, give written advice, and tell her to avoid sex and tampons for a few weeks (from memory)
Warning signs after treatment: heavy bleeding, fever, foul discharge, or severe pain; she should return at once (from memory)
Record every positive woman in a register and trace those who miss follow-up; a screening programme is effective only with an organised system of follow-up and management
Register families and list every woman over 30; the national framework plans population-based screening, with the ANM and ASHA on a fixed weekly screening day
Counsel her before the test: what it is, that it is quick and safe, that the result is private
Remove barriers: cost, distance, shyness, fear of the result, and the need for a woman provider (from memory)
Link screening with HPV vaccination of girls, and with family planning, antenatal and immunisation visits (from memory)
Use self-sampling where available to reach women who will not attend
HPV vaccination of girls before they become sexually active is part of the global strategy to eliminate cervical cancer; the 2030 targets are 90% vaccinated, 70% of women screened with a high-performance test, and 90% of women with cervical disease treated (vaccination target from memory)
Condom use, delaying the first sex, avoiding tobacco, and treating HIV all lower the risk (from memory)
Treating screening and diagnosis as the same thing: bleeding after sex needs a work-up
Letting a positive woman go home without a treatment or follow-up date
Screening too early, or too often, in low-risk women when resources are short (from memory)
Forgetting that women living with HIV need earlier and more frequent screening
Telling a woman that a negative HPV test means she will never need screening again
Breaking her privacy about the result



