Investigator
Visiting Scientist · International Agency for Research on Cancer, EPR
The cervical cancer screening and precancer treatment journey: a qualitative study of experiences among Zambian women living with and without HIV
Abstract Background Zambia has the third highest cervical cancer incidence rate globally, and it remains the leading cause of cancer-related death among women. We explored the experiences of Zambian women who accessed cervical cancer screening and precancer treatment services to understand factors influencing care-seeking and access across urban, peri-urban, and rural settings. Methods In 2020, we conducted eight focus group discussions with women living with and without Human Immunodeficiency Virus (HIV) who underwent cervical cancer screening between 2016 and 2020. To explore their care journey, participants were grouped by screening outcome—those with cervical precancerous lesions and those without. We also conducted 18 in-depth interviews with healthcare workers providing antiretroviral treatment, cervical cancer screening, or precancer treatment at government health facilities. Transcripts were coded and analyzed using thematic analysis. Results Care-seeking unfolded across five stages: recognition of need to screen, hesitation and consultation, screening, result interpretation, and treatment. Women were generally knowledgeable about cervical cancer and sought screening promptly, though some delayed due to fear. Social networks and interactions with healthcare workers facilitated screening, while logistical and financial barriers, along with delays in histopathology services particularly in rural areas, hindered access to timely diagnosis and treatment. Conclusion Improving cervical cancer screening and precancer treatment in Zambia requires addressing systemic inefficiencies by strengthening laboratory capacity, decentralizing diagnostics, and training healthcare workers to provide respectful, consistent counselling. Expanding community engagement to counter misinformation, leveraging social networks, and providing financial protection are also critical to ensuring timely, equitable, and reassuring care.
Screening test accuracy to improve detection of precancerous lesions of the cervix in women living with HIV: a study protocol
Introduction The simplest and cheapest method for cervical cancer screening is visual inspection after application of acetic acid (VIA). However, this method has limitations for correctly identifying precancerous cervical lesions (sensitivity) and women free from these lesions (specificity). We will assess alternative screening methods that could improve sensitivity and specificity in women living with humanimmunodeficiency virus (WLHIV) in Southern Africa. Methods and analysis We will conduct a paired, prospective, screening test accuracy study among consecutive, eligible women aged 18–65 years receiving treatment for HIV/AIDS at Kanyama Hospital, Lusaka, Zambia. We will assess a portable magnification device (Gynocular, Gynius Plus AB, Sweden) based on the Swede score assessment of the cervix, test for high-risk subtypes of human papillomavirus (HR-HPV, GeneXpert, Cepheid, USA) and VIA. All study participants will receive all three tests and the reference standard at baseline and at six-month follow-up. The reference standard is histological assessment of two to four biopsies of the transformation zone. The primary histological endpoint is cervical intraepithelial neoplasia grade two and above (CIN2+). Women who are VIA-positive or have histologically confirmed CIN2+ lesions will be treated as per national guidelines. We plan to enrol 450 women. Primary outcome measures for test accuracy include sensitivity and specificity of each stand-alone test. In the secondary analyses, we will evaluate the combination of tests. Pre-planned additional studies include use of cervigrams to test an automated visual assessment tool using image pattern recognition, cost-analysis and associations with trichomoniasis. Ethics and dissemination Ethical approval was obtained from the University of Zambia Biomedical Research Ethics Committee, Zambian National Health Regulatory Authority, Zambia Medicines Regulatory Authority, Swissethics and the International Agency for Research on Cancer Ethics Committee. Results of the study will be submitted for publication in a peer-reviewed journal. Trial registration number NCT03931083 ; Pre-results.
Screening test accuracy of portable devices that can be used to perform colposcopy for detecting CIN2+ in low- and middle-income countries: a systematic review and meta-analysis
Abstract Background Portable devices that can be used to perform colposcopy may improve cervical cancer screening in low- and middle-income countries (LMIC) where access to colposcopy is limited. The objective of this study was to systematically review the diagnostic test accuracy (DTA) of these devices for the detection of cervical intraepithelial neoplasia grade 2 or higher (CIN2+). Methods In accordance with our protocol (Prospero CRD42018104286), we searched Embase, Medline and the Cochrane Controlled Register of Trials up to 9/2019. We included DTA studies, which investigated portable devices with moderate-to-high optical magnification (≥ 6×) for colposcopy, as described in the manual for Colposcopy and Treatment by the International Agency for Research on Cancer, with a histopathological reference standard. We used the QUADAS-2 tool to assess study quality. We examined results for sensitivity and specificity in paired forest plots, stratified by stages in the clinical pathway. We pooled estimates of test accuracy for the index test, used as an add-on to other tests, using a bivariate random-effect model. Results We screened 1737 references and assessed 239 full-text articles for eligibility. Five single-gate DTA studies, including 2693 women, met the inclusion criteria. Studies evaluated two devices (Gynocular™ and Pocket) at different stages of the screening pathway. In three studies, which used the index test in an add-on capacity in 1273 women, we found a pooled sensitivity of 0.79 (95% CI 0.55–0.92) and specificity of 0.83 (95% CI 0.59–0.94). The main sources of bias were partial verification, incorporation and classification bias. Conclusion Few studies have evaluated portable devices able to perform colposcopy, so their accuracy for the detection of CIN2+ remains uncertain. Future studies should include patient-relevant and long-term outcomes, including missed cases, overtreatment, residual and recurrent disease. To meet the challenge of eliminating cervical cancer in LMIC, methods for visual assessment of the cervix need urgent redress.
Cancer Screening in the Coronavirus Pandemic Era: Adjusting to a New Situation
PURPOSE The coronavirus-induced pandemic has put great pressure on health systems worldwide. Nonemergency health services, such as cancer screening, have been scaled down or withheld as a result of travel restrictions and resources being redirected to manage the pandemic. The present article discusses the challenges to cancer screening implementation in the pandemic environment, suggesting ways to optimize services for breast, cervical, and colorectal cancer screening. METHODS The manuscript was drafted by a team of public health specialists with expertise in implementation and monitoring of cancer screening. A scoping review of literature revealed the lack of comprehensive guidance on continuation of cancer screening in the midst of waxing and waning of infection. The recommendations in the present article were based on the advisories issued by different health agencies and professional bodies and the authors' understanding of the best practices to maintain quality-assured cancer screening. RESULTS A well-coordinated approach is required to ensure that essential health services such as cancer management are maintained and elective services are not threatened, especially because of resource constraints. In the context of cancer screening, a few changes in invitation strategies, screening and management protocols and program governance need to be considered to fit into the new normal situation. Restoring public trust in providing efficient and safe services should be one of the key mandates for screening program reorganization. This may be a good opportunity to introduce innovations (eg, telehealth) and consider de-implementing non–evidence-based practices. It is necessary to consider increased spending on primary health care and incorporating screening services in basic health package. CONCLUSION The article provides guidance on reorganization of screening policies, governance, implementation, and program monitoring.
Cervical precancer and cancer incidence among insured women with and without HIV in South Africa
AbstractHIV infection increases the risk of developing cervical cancer; however, longitudinal studies in sub‐Saharan Africa comparing cervical cancer rates between women living with HIV (WLWH) and women without HIV are scarce. To address this gap, we compared cervical precancer and cancer incidence rates between WLWH and women without HIV in South Africa using reimbursement claims data from a medical insurance scheme from January 2011 to June 2020. We used Royston‐Parmar flexible parametric survival models to estimate cervical precancer and cancer incidence rates as a continuous function of age, stratified by HIV status. Our study population consisted of 518 048 women, with exclusions based on the endpoint of interest. To analyse cervical cancer incidence, we included 517 312 women, of whom 564 developed cervical cancer. WLWH had an ~3‐fold higher risk of developing cervical precancer and cancer than women without HIV (adjusted hazard ratio for cervical cancer: 2.99; 95% confidence interval [CI]: 2.40‐3.73). For all endpoints of interest, the estimated incidence rates were higher in WLWH than women without HIV. Cervical cancer rates among WLWH increased at early ages and peaked at 49 years (122/100 000 person‐years; 95% CI: 100‐147), whereas, in women without HIV, incidence rates peaked at 56 years (40/100 000 person‐years; 95% CI: 36‐45). Cervical precancer rates peaked in women in their 30s. Analyses of age‐specific cervical cancer rates by HIV status are essential to inform the design of targeted cervical cancer prevention policies in Southern Africa and other regions with a double burden of HIV and cervical cancer.
Cervical cancer prevention and care in HIV clinics across sub‐Saharan Africa: results of a facility‐based survey
AbstractINTRODUCTIONTo eliminate cervical cancer (CC), access to and quality of prevention and care services must be monitored, particularly for women living with HIV (WLHIV). We assessed implementation practices in HIV clinics across sub‐Saharan Africa (SSA) to identify gaps in the care cascade and used aggregated patient data to populate cascades for WLHIV attending HIV clinics.METHODSOur facility‐based survey was administered between November 2020 and July 2021 in 30 HIV clinics across SSA that participate in the International epidemiology Databases to Evaluate AIDS (IeDEA) consortium. We performed a qualitative site‐level assessment of CC prevention and care services and analysed data from routine care of WLHIV in SSA.RESULTSHuman papillomavirus (HPV) vaccination was offered in 33% of sites. Referral for CC diagnosis (42%) and treatment (70%) was common, but not free at about 50% of sites. Most sites had electronic health information systems (90%), but data to inform indicators to monitor global targets for CC elimination in WLHIV were not routinely collected in these sites. Data were collected routinely in only 36% of sites that offered HPV vaccination, 33% of sites that offered cervical screening and 20% of sites that offered pre‐cancer and CC treatment.CONCLUSIONSThough CC prevention and care services have long been available in some HIV clinics across SSA, patient and programme monitoring need to be improved. Countries should consider leveraging their existing health information systems and use monitoring tools provided by the World Health Organization to improve CC prevention programmes and access, and to track their progress towards the goal of eliminating CC.
Visiting Scientist
International Agency for Research on Cancer · EPR
Postdoctoral Research Fellow
University of Bern · Institute of Social and Preventive Medicine