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Goel B, Desouza A, Sehgal A, Dubey S. Looking Beyond VIA to Improve Cervical Cancer Screening in Low Resource Settings. J Obstet Gynaecol India 2022; 72:503-508. [PMID: 36506901 PMCID: PMC9732159 DOI: 10.1007/s13224-022-01674-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 06/25/2022] [Indexed: 12/15/2022] Open
Abstract
Background The two prongs for cervical cancer prevention are vaccination for primary prevention and effective screening for preinvasive and early invasive disease. Until human papilloma virus DNA testing can be provided in low resource settings, screening with VIA is the most feasible option. Various innovative methods have been used to improve the diagnostic accuracy of visual inspection with acetic acid (VIA). This study explores one such option. Method We modified VIA (VIA-Md) by using a magnifying lens mounted with battery operated light emitting devices (LEDs) to study the acetowhite areas on the cervix. The peak wavelength of the light from the LEDs was in the bluish white range. The results of VIA and VIA-Md were compared using colposcopy directed biopsy as the reference standard. Result The study was conducted in 273 eligible women. The sensitivity of VIA and VIA-Md for detecting CIN2 + lesions were 57.1% and 100% respectively. The specificity of VIA and VIA-Md were 99.2% and 89.5%; and p values using the colposcopy directed biopsy as the reference standard were 0.000 and 0.018 respectively. However, VIA-Md was also effective in identifying 21 out of the total 32 cases of chronic cervicitis identified by colposcopy directed biopsy. Conclusion VIA-Md appears to be a highly sensitive test for detection of CIN2 + lesions. However, because of concerns regarding lower specificity, VIA-Md can be used simultaneously with VIA as an effective tool for triaging women who need to be kept under close surveillance or who might benefit from local ablative therapy.
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Affiliation(s)
- Bharti Goel
- Department of Obstetrics and Gynaecology, Government Medical College and Hospital (GMCH), Sector - 32, Chandigarh, India
| | - Argyia Desouza
- Department of Obstetrics and Gynaecology, K.S Hegde Medical Academy, Mangaluru, India
| | - Alka Sehgal
- Department of Obstetrics and Gynaecology, Government Medical College and Hospital (GMCH), Sector - 32, Chandigarh, India
| | - Sunita Dubey
- Department of Obstetrics and Gynaecology, Government Medical College and Hospital (GMCH), Sector - 32, Chandigarh, India
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Karisani N, Aminimoghaddam S, Kashanian M, Baradaran HR, Moradi Y. Diagnostic accuracy for alternative cervical cancer screening strategies: A systematic review and meta-analysis. Health Care Women Int 2022; 45:323-362. [PMID: 35084291 DOI: 10.1080/07399332.2021.1998059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 10/21/2021] [Indexed: 12/26/2022]
Abstract
We performed a systematic review and meta-analysis to evaluate the accuracy of screening cervical cancer tests as alternative standalone methods. The combined estimates of sensitivity of visual inspection with acetic acid, visual inspection with lugol's iodine, conventional pap smear, liquid-based cytology, High risk HPV testing by clinician, High risk HPV testing by self- sampling, cervicography were 64%, 80%, 55%, 70%, 70% and 67% respectively; the combine values of specificity of these screening strategies were 88%, 88%, 96%, 59%, 94%, and 95% respectively. Our findings draw attention to an attractive opinion to facilitate the collection of specimens for DNA HPV by patients in settings where they don't have access to a regular screening programs.
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Affiliation(s)
- Narmin Karisani
- Department of Obstetrics and Gynecology, Iran University of Medical Sciences, Akbarabadi Teaching Hospital, Tehran, Iran
| | - Soheila Aminimoghaddam
- Department of Obstetrics and Gynecology, Iran University of Medical Sciences, Akbarabadi Teaching Hospital, Tehran, Iran
| | - Maryam Kashanian
- Gynecologist Oncologist, Iran University of Medical Sciences, Tehran, Iran
| | - Hamid Reza Baradaran
- Ageing Clinical & Experimental Research Team, Institute of Applied Health Sciences, Aberdeen, Scotland
| | - Yousef Moradi
- Social Determinants of Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
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Aydın S, Karasu AFG, Maraşlı M, Bademler N, Kıran G, Dural HR. Reliability and diagnostic performance of smartphone colposcopy. Int J Gynaecol Obstet 2021; 155:404-410. [PMID: 33630304 DOI: 10.1002/ijgo.13662] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/02/2021] [Accepted: 02/23/2021] [Indexed: 01/08/2023]
Abstract
OBJECTIVE To evaluate the interobserver and intraobserver reliability of smartphone colposcopy (SPC) versus conventional colposcopy and to determine diagnostic performance. METHODS A smartphone back camera was used to capture cervical images before and after application of acetic acid, and after application of lugol solution. Captured images were reviewed independently by two experienced colposcopists and findings were noted as per colposcopy. Smartphone-based diagnostic performance was calculated, and kappa statistics were used for measurement of agreement between SPC and conventional colposcopy findings. RESULTS A total of 114 women were included in the study. The kappa statistic for intraobserver reliability was 0.77 for both normal colposcopic findings and the transformation zone, indicating substantial agreement. Kappa values were 0.54 for acetowhite epithelium, 0.51 for lugol staining, and 0.51-0.60 for atypical vascularization. Kappa values for interobserver reliability were 0.76 for normal colposcopic findings, 0.56 for acetowhite epithelium, and 0.60 for lugol staining. The sensitivity, specificity, PPV, and NPV of SPC for CIN2+ were 88.2 (95% CI, 72.5-96.7), 48.7 (95% CI, 37.4-60.2), 0.42 (95% CI, 0.36-0.48), and 0.91 (95% CI, 0.79-0.96), respectively. CONCLUSION SPC showed substantial agreement between the histologic diagnoses based on the captured images and conventional colposcopic findings.
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Affiliation(s)
- Serdar Aydın
- Department of Obstetrics and Gynecology, Koc University School of Medicine, Istanbul, Turkey
| | - Ayse F G Karasu
- Department of Obstetrics and Gynecology, Bezmialem Vakif University, Istanbul, Turkey
| | - Mustafa Maraşlı
- Department of Obstetrics and Gynecology, Siirt State Hospital, Siirt, Turkey
| | - Neslihan Bademler
- Department of Obstetric and Gynecology, Okmeydanı Research and Training Hospital, Istanbul, Turkey
| | - Gürkan Kıran
- Department of Obstetrics and Gynecology, Bezmialem Vakif University, Istanbul, Turkey
| | - Hanife R Dural
- Department of Obstetrics and Gynecology, Bezmialem Vakif University, Istanbul, Turkey
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Taghavi K, Rohner E, Basu P, Low N, Rutjes A, Bohlius J. 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. BMC Womens Health 2020; 20:253. [PMID: 33198721 PMCID: PMC7670616 DOI: 10.1186/s12905-020-01121-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 11/05/2020] [Indexed: 01/04/2023] Open
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.
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Affiliation(s)
- Katayoun Taghavi
- Institute of Social and Preventive Medicine, University of Bern, Mittelstrasse 43, 3012, Bern, Switzerland.
- The Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland.
| | - Eliane Rohner
- Institute of Social and Preventive Medicine, University of Bern, Mittelstrasse 43, 3012, Bern, Switzerland
| | - Partha Basu
- Screening Group, Early Detection and Prevention Section, International Agency for Research on Cancer, Lyon, France
| | - Nicola Low
- Institute of Social and Preventive Medicine, University of Bern, Mittelstrasse 43, 3012, Bern, Switzerland
| | - Anne Rutjes
- Institute of Social and Preventive Medicine, University of Bern, Mittelstrasse 43, 3012, Bern, Switzerland
| | - Julia Bohlius
- Institute of Social and Preventive Medicine, University of Bern, Mittelstrasse 43, 3012, Bern, Switzerland
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The value of microendoscopy in the diagnosis of cervical precancerous lesions and cervical microinvasive carcinoma. Arch Gynecol Obstet 2020; 302:455-462. [PMID: 32504196 DOI: 10.1007/s00404-020-05565-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 04/25/2020] [Indexed: 12/24/2022]
Abstract
PURPOSE Cervical cancer is still one of the main causes of death in females. Conventional diagnostic tools such as colposcopy are still unsatisfactory, so accurate diagnostic tools for cervical diseases are needed. Therefore, the purpose of this study was to perform a clinical study to evaluate the value of microendoscopic imaging systems in the diagnosis of cervical precancerous lesions and cervical microinvasive carcinoma (MIC). METHODS Totally 106 patients ranging in age from 23 to 67 years were recruited. All patients had abnormal thin-layer cytology (TCT) results (≥ low-grade squamous intraepithelial lesions) and high-risk human papillomavirus (HPV) positivity. Each patient was first subjected to ordinary colposcopy, followed by microendoscopy and biopsy. All results of the colposcopy and microendoscopy images were compared to the histopathological diagnosis. RESULTS Characteristics of pathological blood vessels were easily distinguished by microendoscopy compared with ordinary colposcopy. The diagnostic agreement rate of microendoscopy with the pathological diagnosis was higher (95.3%) than that of ordinary colposcopy (37.7%) (weighted kappa = 0.863, P < .01). When diagnosing HSIL and more advanced disease, the sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy of the microendoscopic diagnosis were significantly higher than those of ordinary colposcopy (97.6 and 38.1%), (95.5 and 63.6%), (98.8 and 80.0%), (91.3 and 21.2%) and (97.7 and 43.4%), respectively. CONCLUSION This study shows that microendoscopy has important value in the diagnosis of cervical lesions which can provide real-time diagnosis in vivo without staining, particularly for lesions that are not sensitive to acetic acid staining.
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Meeta M, Digumarti L, Agarwal N, Vaze N, Shah R, Malik S. Clinical Practice Guidelines on Menopause: *An Executive Summary and Recommendations: Indian Menopause Society 2019-2020. J Midlife Health 2020; 11:55-95. [PMID: 33281418 PMCID: PMC7688016 DOI: 10.4103/jmh.jmh_137_20] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/10/2020] [Accepted: 07/14/2020] [Indexed: 12/15/2022] Open
Affiliation(s)
- Meeta Meeta
- Gynecologist, Co-Director and Chief Consultant, Tanvir Hospital, Hyderabad, Telangana, India
| | - Leela Digumarti
- Gynecologist, Homi Bhabha Cancer Hospital and Research Centre, Aganampudi, Visakhapatnam, Andhra Pradesh, India
| | - Neelam Agarwal
- Obs Gynae, Postgraduate Institute of Medical Education & Research, Chandigarh, India
| | - Nirmala Vaze
- Consultant Obstetrician/Gynaecologist, Counselar Breast, Gynae Cancer & Menopause, Nagpur, India
| | - Rashmi Shah
- Gynecologist, Ex Senior Deputy Director, National Institute for Research in Reproductive Health (ICMR), Mumbai, India
| | - Sonia Malik
- Gynecologist, Director and HOD, Southend Fertility & IVF Centre, New Delhi, India
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Thay S, Peprah SA, Hur C, Tramontano AC, Maling E, Goldstein AT, Hong C. Prevalence of Cervical Dysplasia in HIV-Positive and HIV-Negative Women at the Sihanouk Hospital Center of
HOPE, Phnom Penh , Cambodia. Asian Pac J Cancer Prev 2019; 20:653-659. [PMID: 30816687 PMCID: PMC6897022 DOI: 10.31557/apjcp.2019.20.2.653] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Introduction: There is a high burden of cervical cancer in Cambodia, yet published data on the prevalence of cervical dysplasia and the risk factors contributing to the development of pre-cancerous lesions in Cambodian women is very limited. In addition, as it is well known that HIV positivity increases cervical cancer risk, it is important to quantify the prevalence of cervical dysplasia and carcinoma among Cambodian women living with HIV disease. Methods: A cross-sectional study was conducted with a sample of 499 HIV+ and 501 HIV- Cambodian women at the Sihanouk Hospital Center of HOPE. Visual inspection with 5% acetic acid was the method of screening. Colposcopy was performed on all VIA+ patients, and subsequent treatment followed WHO guidelines. Logistic regression models, stratified by both HIV+ and HIV- groups, were used to assess significant factors associated with having dysplasia. Results: VIA+ results were prevalent in both the HIV+ and HIV- arms of the study. The HIV+ patients were more likely to have a lower age at coitarche, lower weight, 2 or more lifetime sexual partners, two or greater pregnancies, or be unmarried. The estimated prevalence of VIA detected cervical dysplasia was 11% for the entire study sample, 13.4% in the HIV positive (HIV+) group and 8.6% in the HIV negative (HIV-) group (OR: 1.65; 95% CI: 1.10, 2.48; p=0.01). For the HIV+ group, having a history of 4 or more full-term pregnancies (OR: 3.42; 95% CI: 1.01-11.64; p=0.049) was found to be significantly associated with having an increased risk of developing cervical dysplasia in the multivariate model. Conclusion: Cervical dysplasia is prevalent in both HIV positive and negative Cambodian women and a VIA based national screening programs need to be developed and expanded to provide access to affordable and effective treatment for cervical dysplasia and cancers.
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Implementing community-based cervical cancer screening programs using visual inspection with acetic acid in India: A systematic review. Cancer Epidemiol 2017; 49:161-174. [PMID: 28704717 DOI: 10.1016/j.canep.2017.06.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 06/13/2017] [Accepted: 06/15/2017] [Indexed: 11/20/2022]
Abstract
The objective of this review was to systematically appraise the existing published literature about community-based cervical cancer screening programs that have used visual inspection methods using acetic acid (VIA) in India. All peer reviewed journal articles till December 2015 were searched per PRISMA guidelines. Articles reporting results from cervical cancer screening programs in community-based settings, conducted in India, and using VIA were included in this review. The search resulted in 20 articles to be included in the review with a total of 313,553 women at 12 unique urban and rural sites across India. Seventeen (85%) studies were cross-sectional and three studies were randomized controlled trials; most studies compared accuracy of VIA with other screening tests such as visual inspection using Lugol's Iodine (VILI), HPV DNA, and cytology. Of studies that reported test accuracy for CIN Grade 2+, the VIA sensitivity values ranged from 16.6-82.6% and specificity ranged from 82.1-96.8%. Women between age groups of 30-59 years were recruited using motivational one-on-one counseling and local support staff. All studies conducted diagnostic follow-up using colposcopy and guided biopsies, when necessary. Three major themes were identified that facilitated implementation of screening programs in a community-based setting: standardized training that maintained competency of test providers; collaborations with community-based organizations that used health education for recruitment of participants; and employing the screen-and-treat method to reduce loss to follow-up. Summarized evidence presented in this review could substantially influence future implementation and sustainment of cervical cancer screening programs at a national level.
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Dumont A, Bessières N, Benbassa A, Razafindrafara G, Rabearison F, Philippe HJ. Dépistage du cancer du col utérin en milieu rural à Madagascar : faisabilité, couverture et incidence. J Gynecol Obstet Hum Reprod 2017. [DOI: 10.1016/j.jogoh.2017.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Basu P, Banerjee D, Mittal S, Mandal R, Ghosh I, Das P, Muwonge R, Biswas J. Evaluation of a compact, rechargeable, magnifying device to triage VIA and HPV positive women in a cervical cancer screening program in rural India. Cancer Causes Control 2016; 27:1253-9. [PMID: 27581249 DOI: 10.1007/s10552-016-0805-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 08/26/2016] [Indexed: 11/30/2022]
Abstract
PURPOSE Many limited-resourced countries have either introduced cervical cancer screening programs or are contemplating to do so using visual inspection after acetic acid application (VIA) or human papillomavirus (HPV) detection tests. Both tests have high false-positivity and a suitable triaging strategy is required. Colposcopy triaging is not practicable in most resource-limited settings due to several reasons. We evaluated a portable, battery-operated, magnifying device (GynocularTM) to triage screen positive women in community setting in India. METHODS Women positive on VIA or oncogenic HPV test were examined with Gynocular by clinicians in primary health clinics. Findings were documented using the International Federation for Cervical Pathology and Colposcopy (IFCPC) terminology. Swede score was also calculated. Biopsy was performed irrespective of Gynocular findings. The accuracy of Gynocular to detect high-grade lesions or cancer (HSIL+) was estimated. The suitability of Gynocular to correctly triage screen positive cases for immediate ablative treatment was also evaluated by creating simulated scenarios. RESULTS Sensitivity and specificity of Gynocular were 96.4 and 47.1 %, respectively, to detect HSIL + at the threshold of IFCPC grade 1 findings. Increasing threshold to grade 2 changed sensitivity and specificity to 92.9 and 94.1 %, respectively. Optimum combination of sensitivity and specificity as determined by the receiver operating curve analysis was at the cut-off Swede score of 5. Triaging of VIA/HPV positive women to treatment using grade 2 criteria would have resulted in modest overtreatment and missing of very few high-grade lesions. CONCLUSION Gynocular can be used as an effective triaging device for VIA/HPV positive women.
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Affiliation(s)
- Partha Basu
- Screening Group, Early Detection and Prevention Section, International Agency for Research on Cancer (WHO), 150 cours Albert Thomas, 69372, Lyon Cedex 08, France.
| | | | - Srabani Mittal
- Chittaranjan National Cancer Institute, Kolkata, West Bengal, India
| | - Ranajit Mandal
- Chittaranjan National Cancer Institute, Kolkata, West Bengal, India
| | - Ishita Ghosh
- Chittaranjan National Cancer Institute, Kolkata, West Bengal, India
| | - Pradip Das
- Chittaranjan National Cancer Institute, Kolkata, West Bengal, India
| | - Richard Muwonge
- Screening Group, Early Detection and Prevention Section, International Agency for Research on Cancer (WHO), 150 cours Albert Thomas, 69372, Lyon Cedex 08, France
| | - Jaydip Biswas
- Chittaranjan National Cancer Institute, Kolkata, West Bengal, India
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Bobdey S, Sathwara J, Jain A, Balasubramaniam G. Burden of cervical cancer and role of screening in India. Indian J Med Paediatr Oncol 2016; 37:278-285. [PMID: 28144096 PMCID: PMC5234166 DOI: 10.4103/0971-5851.195751] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND Cervical cancer is a major cause of cancer mortality in women and more than a quarter of its global burden is contributed by developing countries. In India, in spite of alarmingly high figures, there is no nationwide government-sponsored screening program. This study was conducted to assess the burden of cervical cancer in India and review the performance characteristics of available cervical cancer screening tools, so as to provide evidence-based recommendations for application of most practically suited screening test to be used in resource-poor field settings. MATERIALS AND METHODS MEDLINE and Web of Science electronic database were searched from January 1990 to December 2015, using the keywords such as "cervical cancer", "screening", "early detection", "cervical cytology" and "visual inspection", and their corresponding MeSH terms in combination with Boolean operators "OR, AND." Two authors independently selected studies that are published in English and conducted in India. A total of 11 studies were found to be relevant and eligible to be included in the present study. RESULTS In India, cervical cancer contributes to approximately 6-29% of all cancers in women. The age-adjusted incidence rate of cervical cancer varies widely among registries; highest is 23.07/100,000 in Mizoram state and the lowest is 4.91/100,000 in Dibrugarh district. The pooled estimates of sensitivity and specificity of visual inspection with acetic acid (VIA), magnified VIA, visual inspection with Lugol's iodine (VILI), cytology (Pap smear), and human papillomavirus DNA were found to be 67.65% and 84.32%, 65.36% and 85.76%, 78.27% and 87.10%, 62.11% and 93.51%, and 77.81% and 91.54%, respectively. CONCLUSIONS In developing countries because of lack of necessary infrastructure and quality control, high-quality cytology screening may not be feasible for wide-scale implementation. Hence, cervical cancer screening program based on visual screening test such as VIA/VILI should be adopted as an integral part of primary health-care setup in resource-poor countries like India.
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Affiliation(s)
- Saurabh Bobdey
- Department of Medical Records, Biostatistics and Epidemiology, Tata Memorial Hospital, Mumbai, Maharashtra, India
| | - Jignasa Sathwara
- Department of Medical Records, Biostatistics and Epidemiology, Tata Memorial Hospital, Mumbai, Maharashtra, India
| | - Aanchal Jain
- Department of Medical Records, Biostatistics and Epidemiology, Tata Memorial Hospital, Mumbai, Maharashtra, India
| | - Ganesh Balasubramaniam
- Department of Medical Records, Biostatistics and Epidemiology, Tata Memorial Hospital, Mumbai, Maharashtra, India
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Bobdey S, Balasubramanium G, Kumar A, Jain A. Cancer Screening: Should Cancer Screening be Essential Component of Primary Health Care in Developing Countries? Int J Prev Med 2015; 6:56. [PMID: 26236443 PMCID: PMC4505397 DOI: 10.4103/2008-7802.160053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 07/23/2014] [Indexed: 11/13/2022] Open
Abstract
Background: Cancer is a fatal disease and is on the rise across the globe. In India, breast, cervix and the oral cavity are the leading cancer sites, but, unfortunately, in-spite of availability of screening tools, there is no organized cancer screening program in India. The main objective of this study was to review the performance of various cancer screening modalities in a resource poor setting. Methods: MEDLINE and web of science electronic database was searched from January 1990 to December 2013, using keywords such as “breast cancer, cervical cancer, oral cancer and their corresponding mesh terms were also used in combination with Boolean operators OR, AND.” Two authors independently selected studies published in English and conducted in India. A total of 16 studies was found relevant and eligible for the review. The data on sensitivity and specificity of various screening tool was extracted and analyzed. Results: Most of the reported screening trails in India are on cervical cancer and few on breast and oral cancer screening. The pooled estimates of sensitivity and specificity of cervical cancer screening test such as visual inspection with acetic acid, magnified visual inspection with acetic acid, visual inspection with Lugol's iodine, cytology (Papanicolaou smear) and human papillomavirus deoxyribonucleic acid was found to be 68.76% and 84.02%, 63.27% and 85.43%, 81.86% and 87.03%, 63.25% and 93.17% and 75.04% and 91.66%, respectively. Sensitivity and specificity of clinical breast examination was found to be 94.30% and 94.30%, respectively. Oral cancer screening through visual inspection by trained health care worker was found to have 87.90% sensitivity and 92.05% specificity. Conclusions: Our study highlights the availability and success of visual screening tools in early detection and mortality reduction of major neoplasia in resource-poor health care settings and recommends implementation of oral and cervical cancer screening as part of assured primary health care package in developing countries.
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Affiliation(s)
- Saurabh Bobdey
- Department of Medical Records, Biostatistics and Epidemiology, Tata Memorial Hospital, Parel, Mumbai, Maharashtra, India
| | - Ganesh Balasubramanium
- Department of Medical Records, Biostatistics and Epidemiology, Tata Memorial Hospital, Parel, Mumbai, Maharashtra, India
| | - Abhinendra Kumar
- Department of Medical Records, Biostatistics and Epidemiology, Tata Memorial Hospital, Parel, Mumbai, Maharashtra, India
| | - Aanchal Jain
- Department of Medical Records, Biostatistics and Epidemiology, Tata Memorial Hospital, Parel, Mumbai, Maharashtra, India
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Affiliation(s)
- Rengaswamy Sankaranarayanan
- Early Detection & Prevention Section and Screening Group, International Agency for Research on Cancer, Lyon, France.
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Krishnan S, Madsen E, Porterfield D, Varghese B. Advancing cervical cancer prevention in India: implementation science priorities. Oncologist 2014; 18 Suppl:13-25. [PMID: 24334478 DOI: 10.1634/theoncologist.18-s2-13] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Cervical cancer is the leading cause of cancer mortality in India, accounting for 17% of all cancer deaths among women aged 30 to 69 years. At current incidence rates, the annual burden of new cases in India is projected to increase to 225,000 by 2025, but there are few large-scale, organized cervical cancer prevention programs in the country. We conducted a review of the cervical cancer prevention research literature and programmatic experiences in India to summarize the current state of knowledge and practices and recommend research priorities to address the gap in services. We found that research and programs in India have demonstrated the feasibility and acceptability of cervical cancer prevention efforts and that screening strategies requiring minimal additional human resources and laboratory infrastructure can reduce morbidity and mortality. However, additional evidence generated through implementation science research is needed to ensure that cervical cancer prevention efforts have the desired impact and are cost-effective. Specifically, implementation science research is needed to understand individual- and community-level barriers to screening and diagnostic and treatment services; to improve health care worker performance; to strengthen links among screening, diagnosis, and treatment; and to determine optimal program design, outcomes, and costs. With a quarter of the global burden of cervical cancer in India, there is no better time than now to translate research findings to practice. Implementation science can help ensure that investments in cervical cancer prevention and control result in the greatest impact.
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Singh V, Parashari A, Gupta S, Sodhani P, Sehgal A. Performance of a low cost magnifying device, Magnivisualizer, versus colposcope for detection of pre-cancer and cancerous lesions of uterine cervix. J Gynecol Oncol 2014; 25:282-6. [PMID: 25142620 PMCID: PMC4195297 DOI: 10.3802/jgo.2014.25.4.282] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Revised: 05/01/2014] [Accepted: 05/21/2014] [Indexed: 12/21/2022] Open
Abstract
Objective To assess the performance of a low cost magnifying device (Magnivisualizer) compared to a standard optical colposcope for detection of precancerous and cancerous lesions of the uterine cervix. Methods A total of 659 consecutive symptomatic women attending a gynecologic outpatient clinic underwent unaided visual inspection followed by cytology, visual inspection of the cervix using 5% acetic acid (VIA), and VIA under magnification (VIAM) with the Magnivisualizer. All women, independently of test results, were referred for colposcopic examination. Colposcopic-directed biopsies were obtained from all positive lesions and compared to positive VIAM cases. Results The detection rate for VIA positive lesions was 12% (134/659), while it was 29% for VIAM positive lesions (191/659). The sensitivities of detection of cervical intraepithelial neoplasia (CIN) 2 and higher lesions were 61.7% for VIA, 88.3% for VIAM, and 86.7% for colposcopy, with a specificity of 58.5% for VIA, 55.8% for VIAM, and 90.4% for colposcopy. The performance of colposcopy and VIAM was moderate (κ, 0.48; 95% confidence interval [CI], 0.41 to 0.54) for detection of CIN 1 and higher lesions and excellent (κ, 0.87; 95% CI, 0.82 to 0.94) for detection of CIN 2 and higher lesions. Conclusion In low resource settings, where colposcopic facilities are not available at the community level, a simple low-cost, handheld Magnivisualizer can be considered a valid option for detection of cervical precancerous and cancerous lesions. However, it cannot replace traditional colposcopy because it has a low specificity that results in many unnecessary biopsies.
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Affiliation(s)
- Veena Singh
- Division of Clinical Research, Institute of Cytology and Preventive Oncology, Noida, India.
| | - Aditya Parashari
- Division of Clinical Research, Institute of Cytology and Preventive Oncology, Noida, India
| | - Sanjay Gupta
- Division of Clinical Research, Institute of Cytology and Preventive Oncology, Noida, India
| | - Pushpa Sodhani
- Division of Clinical Research, Institute of Cytology and Preventive Oncology, Noida, India
| | - Ashok Sehgal
- Division of Clinical Research, Institute of Cytology and Preventive Oncology, Noida, India
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Gupta S, Singh V, Sehgal A, Sodhani P. Cervical cancer in resource-limited settings: preventable but not yet prevented. ACTA ACUST UNITED AC 2014. [DOI: 10.1586/17474108.2.4.515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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Krishnan S, Madsen E, Porterfield D, Varghese B. Advancing cervical cancer prevention in India: implementation science priorities. Oncologist 2013; 18:1285-97. [PMID: 24217555 PMCID: PMC3868423 DOI: 10.1634/theoncologist.2013-0292] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2013] [Accepted: 10/04/2013] [Indexed: 12/31/2022] Open
Abstract
Cervical cancer is the leading cause of cancer mortality in India, accounting for 17% of all cancer deaths among women aged 30 to 69 years. At current incidence rates, the annual burden of new cases in India is projected to increase to 225,000 by 2025, but there are few large-scale, organized cervical cancer prevention programs in the country. We conducted a review of the cervical cancer prevention research literature and programmatic experiences in India to summarize the current state of knowledge and practices and recommend research priorities to address the gap in services. We found that research and programs in India have demonstrated the feasibility and acceptability of cervical cancer prevention efforts and that screening strategies requiring minimal additional human resources and laboratory infrastructure can reduce morbidity and mortality. However, additional evidence generated through implementation science research is needed to ensure that cervical cancer prevention efforts have the desired impact and are cost-effective. Specifically, implementation science research is needed to understand individual- and community-level barriers to screening and diagnostic and treatment services; to improve health care worker performance; to strengthen links among screening, diagnosis, and treatment; and to determine optimal program design, outcomes, and costs. With a quarter of the global burden of cervical cancer in India, there is no better time than now to translate research findings to practice. Implementation science can help ensure that investments in cervical cancer prevention and control result in the greatest impact.
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Affiliation(s)
- Suneeta Krishnan
- RTI International, Research Triangle Park, North Carolina, USA
- St. John's Research Institute, Bangalore, India
| | - Emily Madsen
- RTI International, Research Triangle Park, North Carolina, USA
| | - Deborah Porterfield
- RTI International, Research Triangle Park, North Carolina, USA
- Department of Social Medicine, School of Medicine, University of North Carolina, Chapel Hill, Chapel Hill, North Carolina, USA
| | - Beena Varghese
- St. John's Research Institute, Bangalore, India
- Public Health Foundation of India, New Delhi, India
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Agreement of Colposcope and Gynocular in Assessment of Cervical Lesions by Swede Score. J Low Genit Tract Dis 2013; 17:372-7. [DOI: 10.1097/lgt.0b013e31827ba7c5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
Context.—Cervical cancer remains the most common malignancy in women living in low- and middle-income countries, despite the decline of the disease in countries where cervical cytology screening programs have been implemented.
Objectives.—To review the current incidence of cervical cancer in low-resource countries, the availability and types of screening programs, and the treatment options.
Data Sources.—Literature review through PubMed, Internet search, and personal communication.
Conclusions.—Although data are incomplete, available figures confirm that the rate of cervical cancer deaths and the availability of cervical cancer screening programs are inversely proportional and vary, in general, by the wealth of the nation. Despite the success of cervical cytology screening, many major health care organizations have abandoned screening by cytology in favor of direct visualization methods with immediate treatment of lesions by cryotherapy provided by trained, nonmedical personnel.
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Affiliation(s)
- Rosemary Tambouret
- From the Department of Pathology, Massachusetts General Hospital, Boston
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Cuzick J, Bergeron C, von Knebel Doeberitz M, Gravitt P, Jeronimo J, Lorincz AT, J L M Meijer C, Sankaranarayanan R, J F Snijders P, Szarewski A. New technologies and procedures for cervical cancer screening. Vaccine 2013. [PMID: 23199953 DOI: 10.1016/j.vaccine.2012.05.088] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The clearly higher sensitivity and reproducibility of human papillomavirus (HPV) DNA testing for high-grade cervical intraepithelial neoplasia (CIN) has led to widespread calls to introduce it as the primary screening test. The main concern has been its lower specificity, due to the fact that it cannot separate transient from persistent infections, and only the latter are associated with an increased risk of high-grade CIN and cancer. Thus, even proponents of HPV testing generally only recommend it for women over the age of 30 years (or in some cases 35 years). If HPV testing is to reach its full potential, new approaches with better specificity are needed, either as triage tests for HPV positive women or, if the high sensitivity of HPV DNA testing can be maintained, as alternate primary screening modalities. Approaches that may useful in this regard, especially as triage tests, include HPV typing, methylation (and consequent silencing) of host and viral genes, and new cytologic methods, such as p16(INK4a) staining, which attempt to identify proliferating cells. At an earlier stage of development are direct methods based on detection of HPV E6 or E7 proteins. Recent progress and current status of these methods is discussed in this chapter. The current status of visual inspection (VIA and VILI) methods is also surveyed and progress on self-sampling is reviewed. This article forms part of a special supplement entitled "Comprehensive Control of HPV Infections and Related Diseases" Vaccine Volume 30, Supplement 5, 2012.
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Affiliation(s)
- Jack Cuzick
- Wolfson Institute of Preventive Medicine, Queen Mary University of London, London, United Kingdom.
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21
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Meeta, Digumarti L, Agarwal N, Vaze N, Shah R, Malik S. Clinical practice guidelines on menopause: An executive summary and recommendations. J Midlife Health 2013; 4:77-106. [PMID: 24082707 PMCID: PMC3785158 DOI: 10.4103/0976-7800.115290] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Meeta
- Indian Menopause Society, Hyderabad, India
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Abstract
Developing countries suffer the highest burden of cervical cancers but have the lowest resources. Effective cervical cytology screening programme, along with a network of diagnostic and therapeutic colposcopy centres, like developed countries, is almost impossible to be reproduced in developing countries. Visual inspection methods [e.g., Visual inspection with Lugol’s iodine (VILI) and Visual Inspection with Acetic Acid (VIA)] which are cheaper, require less expertise and have the advantage of possible treatment in one setting have been shown to be effective alternatives. The sensitivity to detect CIN2+, by VIA and VILI, have been shown to be 80% and 91% respectively, with a specificity rate of 92% and 85% respectively. Screening by human papillomavirus (HPV) testing has high sensitivity (96.4%) but low specificity (94.1%) to detect CIN2+, when compared to Pap Smear (sensitivity, 55.4% and specificity, 96.8%). A single lifetime HPV testing in a large unscreened population has been shown to significantly reduce cervical cancer incidence and mortality when compared to cervical cytology, VIA or no screening. HPV testing of self-collected vaginal specimens also helps to overcome religious and socio-cultural barriers towards pelvic examination amongst women in developing countries. Current HPV testing methods are expensive, skill/infrastructure demanding and takes time to produce results. A cheaper HPV test, called careHPV™, which is able to provide results within 2.5 h and requires minimal skill/infrastructure to operate, was designed for use in developing countries. One stop screen and treat facilities using VIA or rapid HPV testing, and cryotherapy, can overcome non-compliance to follow-up which is a major issue in developing countries. Cure rates of 81.4% for CIN1, 71.4% for CIN2 and 68.0% for CIN3 at 6 mo after treatment have been reported. Incorporating telemedicine with cervicography of VIA or VILI or even telecolposcopy, has great potential in cervical cancer screening, especially in countries with vast geographical areas.
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Accuracy of several cervical screening strategies for early detection of cervical cancer: a meta-analysis. Int J Gynecol Cancer 2012; 22:908-21. [PMID: 22672987 DOI: 10.1097/igc.0b013e318256e5e4] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE The objectives of this study were to assess the accuracy of 6 common cervical screening strategies, including visual inspection with acetic acid, with a magnifying device, or with Lugol iodine (VILI), human papillomavirus testing with Hybrid Capture 2 assay, conventional Papanicolaou smear, and thin liquid-based cytology (LBC), and then to compare data obtained by the aforementioned 6 strategies. METHODS PubMed, EMBASE, and The Cochrane Library were systematically searched for all original relevant studies about early detection of cervical cancer. A meta-analysis was performed to evaluate the accuracy of the 6 screening strategies covering sensitivity, specificity, diagnostic odds ratio, and the area under the receiver operating characteristic curve. RESULTS Fifteen articles containing 22 cross-sectional studies were finally identified. The combined estimates of sensitivity for visual inspection with acetic acid, magnified visual inspection with acetic acid, VILI, Hybrid Capture 2 assay, conventional Papanicolaou smear, and LBC were 77%, 64%, 91%, 74%, 59%, and 88%, respectively; the combined values of specificity of these screening strategies were 87%, 86%, 85%, 92%, 94%, and 88%, respectively; the diagnostic odds ratio were 22.43, 10.30, 57.44, 33.26, 22.49, and 51.56, respectively; and the area under the receiver operating characteristic curve were 0.8918, 0.7737, 0.9365, 0.9486, 0.9079, and 0.9418, respectively. CONCLUSIONS This meta-analysis suggests that LBC appeared to be promising in primary cervical cancer screening in resourced regions, and VILI might be a good choice to identify/exclude cervical cancerous and precancerous lesions in resource-constrained regions.
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Sankaranarayanan R, Nessa A, Esmy PO, Dangou JM. Visual inspection methods for cervical cancer prevention. Best Pract Res Clin Obstet Gynaecol 2011; 26:221-32. [PMID: 22075441 DOI: 10.1016/j.bpobgyn.2011.08.003] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Accepted: 08/12/2011] [Indexed: 02/06/2023]
Abstract
The need for simple, cost-effective screening approaches for cervical cancer prevention in low-resource countries has led to the evaluation of visual screening with 3-5% acetic acid. The low reproducibility and wide variation in accuracy reflect the subjective nature of the test. Pooled sensitivity, specificity, positive and negative predictive values were 80%, 92%, 10% and 99%, respectively, for detecting cervical intraepithelial neoplasia grade 2 or worse lesions. Realistic sensitivity of a quality- assured single visual inspection with acetic acid is around 50%. A single round of visual inspection with acetic acid screening has been associated with a 25-35% reduction in cervical cancer incidence and the frequency of cervical intraepithelial neoplasia grade 2 or worse lesions in randomised-controlled trials. Despite all its limitations, implementing visual inspection with acetic acid screening in low-resource countries may provide a pragmatic approach to building up human resources and infrastructure that may facilitate the highly anticipated low-cost, rapid human papilloma virus testing in the near future.
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Affiliation(s)
- Rengaswamy Sankaranarayanan
- Early Detection and Prevention Section and Screening Group, International Agency for Research on Cancer (IARC), 150 Cours Albert Thomas, 69372 Lyon Cedex 08, France.
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Sankaranarayanan R, Sauvaget C, Ramadas K, Ngoma T, Teguete I, Muwonge R, Naud P, Nessa A, Kuhaprema T, Qiao Y. Clinical trials of cancer screening in the developing world and their impact on cancer healthcare. Ann Oncol 2011; 22 Suppl 7:vii20-vii28. [DOI: 10.1093/annonc/mdr422] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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26
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Asia oceania guidelines for the implementation of programs for cervical cancer prevention and control. J Cancer Epidemiol 2011; 2011:794861. [PMID: 21559068 PMCID: PMC3083000 DOI: 10.1155/2011/794861] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2010] [Accepted: 01/17/2011] [Indexed: 01/20/2023] Open
Abstract
This paper aims to provide evidence-based recommendations for health professionals, to develop a comprehensive cervical cancer program for a clinic, a community, or a country. Ensuring access to healthcare is the responsibility of all societies, and the Asia Oceania Research Organisation in Genital Infections and Neoplasia (AOGIN) is committed to working collaboratively with governments and health professionals to facilitate prevention programs, to protect girls and women from cervical cancer, a disease that globally affects 500,000 and kills nearly 300,000 women annually, just over half of whom are in the Asia Oceania region. We share the vision that a comprehensive program of vaccination, screening, and treatment should be made accessible to all girls and women in the world.
The primary purpose of these guidelines is to provide information on scientific evidence on the different modalities and approaches of cervical cancer prevention programs, for high resource and low resource settings. The secondary purpose is to provide an overview of the current situation of cervical cancer control and prevention in various Asian Oceania countries: their views of an ideal program, identified obstacles, and suggestions to overcome them are discussed.
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27
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Aggarwal P, Batra S, Gandhi G, Zutshi V. Comparison of Papanicolaou test with visual detection tests in screening for cervical cancer and developing the optimal strategy for low resource settings. Int J Gynecol Cancer 2010; 20:862-8. [PMID: 20606535 DOI: 10.1111/igc.0b013e3181e02f77] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVES To compare the sensitivity, specificity, positive and negative predictive values, and accuracy of Papanicolaou test with visual inspection with acetic acid (VIA)/VIA using magnification devices (VIAM) and develop the best strategy for screening in low resource settings. MATERIALS AND METHODS This is a prospective cross-sectional study on 408 symptomatic multiparous women in the reproductive age group, sequentially using the Papanicolaou test, the VIA, and the VIAM for screening. Women with a positive screening test underwent guided biopsy and endocervical curettage. The site of biopsy was recorded. Histopathological findings were taken as the "gold" standard in comparing the methods. RESULTS The mean (SD) age was 32.3 (6.8) years (range, 15-49 years), whereas the mean (SD) parity was 2.9 (1.2) (range, 1-9). Abnormal cytological findings were detected in 2.9% patients, whereas the remaining smears were negative for any intraepithelial lesion or malignancy. A total of 113 cases were screened positive by one/all methods. The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of the Papanicolaou test, the VIA, and the VIAM were 24, 98, 42, 96, and 94%; 95, 78, 19, 99, and 79%; and 95, 78, 19, 99, and 79%, respectively, for high-grade lesions. CONCLUSIONS The Papanicolaou test had low sensitivity but high specificity, whereas visual detection methods had a high sensitivity in addition to being cheaper. Alternative methods of screening such as VIA/VIAM can be a valuable alternative to the Papanicolaou test for cervical cancer screening in low resource settings. Visual inspection using magnification devices may be of benefit over VIA in doubtful cases.
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Affiliation(s)
- Pakhee Aggarwal
- Department of Obstetrics and Gynaecology, Maulana Azad Medical College and Lok Nayak Hospital, New Delhi, India.
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29
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Can visual inspection with acetic acid under magnification substitute colposcopy in detecting cervical intraepithelial neoplasia in low-resource settings? Arch Gynecol Obstet 2010; 284:397-403. [DOI: 10.1007/s00404-010-1673-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2010] [Accepted: 09/02/2010] [Indexed: 12/28/2022]
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Gage JC, Rodriguez AC, Schiffman M, Adadevoh S, Larraondo MJA, Chumworathayi B, Lejarza SV, Araya LV, Garcia F, Budihas SR, Long R, Katki HA, Herrero R, Burk RD, Jeronimo J. An evaluation by midwives and gynecologists of treatability of cervical lesions by cryotherapy among human papillomavirus-positive women. Int J Gynecol Cancer 2009; 19:728-33. [PMID: 19509579 DOI: 10.1111/igc.0b013e3181a48b99] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVES To estimate efficacy of a visual triage of human papillomavirus (HPV)-positive women to either immediate cryotherapy or referral if not treatable (eg, invasive cancer, large precancers). METHODS We evaluated visual triage in the HPV-positive women aged 25 to 55 years from the 10,000-woman Guanacaste Cohort Study (n = 552). Twelve Peruvian midwives and 5 international gynecologists assessed treatability by cryotherapy using digitized high-resolution cervical images taken at enrollment. The reference standard of treatability was determined by 2 lead gynecologists from the entire 7-year follow-up of the women. Women diagnosed with histologic cervical intraepithelial neoplasia grade 2 or worse or 5-year persistence of carcinogenic HPV infection were defined as needing treatment. RESULTS Midwives and gynecologists judged 30.8% and 41.2% of women not treatable by cryotherapy, respectively (P < 0.01). Among 149 women needing treatment, midwives and gynecologists correctly identified 57.5% and 63.8% (P = 0.07 for difference) of 71 women judged not treatable by the lead gynecologists and 77.6% and 59.7% (P < 0.01 for difference) of 78 women judged treatable by cryotherapy. The proportion of women judged not treatable by a reviewer varied widely and ranged from 18.6% to 61.1%. Interrater agreement was poor with mean pairwise overall agreement of 71.4% and 66.3% and kappa's of 0.33 and 0.30 for midwives and gynecologists, respectively. CONCLUSIONS In future "screen-and-treat" cervical cancer prevention programs using HPV testing and cryotherapy, practitioners will visually triage HPV-positive women. The suboptimal performance of visual triage suggests that screen-and-treat programs using cryotherapy might be insufficient for treating precancerous lesions. Improved, low-technology triage methods and/or improved safe and low-technology treatment options are needed.
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Affiliation(s)
- Julia C Gage
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD 20852, USA.
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Thekkek N, Richards-Kortum R. Optical imaging for cervical cancer detection: solutions for a continuing global problem. Nat Rev Cancer 2008; 8:725-31. [PMID: 19143057 PMCID: PMC2633464 DOI: 10.1038/nrc2462] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Cervical cancer is the leading cause of cancer death for women in developing countries. Optical technologies can improve the accuracy and availability of cervical cancer screening. For example, battery-powered digital cameras can obtain multi-spectral images of the entire cervix, highlighting suspicious areas, and high-resolution optical technologies can further interrogate such areas, providing in vivo diagnosis with high sensitivity and specificity. In addition, targeted contrast agents can highlight changes in biomarkers of cervical neoplasia. Such advances should provide a much needed global approach to cervical cancer prevention.
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Affiliation(s)
- Nadhi Thekkek
- Department of Bioengineering, Rice University, Houston, Texas 77005, USA
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Human Papillomavirus Infection and Cervical Cancer Prevention in India, Bangladesh, Sri Lanka and Nepal. Vaccine 2008; 26 Suppl 12:M43-52. [PMID: 18945413 DOI: 10.1016/j.vaccine.2008.05.005] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Arbyn M, Sankaranarayanan R, Muwonge R, Keita N, Dolo A, Mbalawa CG, Nouhou H, Sakande B, Wesley R, Somanathan T, Sharma A, Shastri S, Basu P. Pooled analysis of the accuracy of five cervical cancer screening tests assessed in eleven studies in Africa and India. Int J Cancer 2008; 123:153-60. [PMID: 18404671 DOI: 10.1002/ijc.23489] [Citation(s) in RCA: 197] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Cervical cancer is the main cancer among women in sub-Saharan Africa, India and other parts of the developing world. Evaluation of screening performance of effective, feasible and affordable early detection and management methods is a public health priority. Five screening methods, naked eye visual inspection of the cervix uteri after application of diluted acetic acid (VIA), or Lugol's iodine (VILI) or with a magnifying device (VIAM), the Pap smear and human papillomavirus testing with the high-risk probe of the Hybrid Capture-2 assay (HC2), were evaluated in 11 studies in India and Africa. More than 58,000 women, aged 25-64 years, were tested with 2-5 screening tests and outcome verification was done on all women independent of the screen test results. The outcome was presence or absence of cervical intraepithelial neoplasia (CIN) of different degrees or invasive cervical cancer. Verification was based on colposcopy and histological interpretation of colposcopy-directed biopsies. Negative colposcopy was accepted as a truly negative outcome. VIA showed a sensitivity of 79% (95% CI 73-85%) and 83% (95% CI 77-89%), and a specificity of 85% (95% CI 81-89%) and 84% (95% CI 80-88%) for the outcomes CIN2+ or CIN3+, respectively. VILI was on average 10% more sensitive and equally specific. VIAM showed similar results as VIA. The Pap smear showed lowest sensitivity, even at the lowest cutoff of atypical squamous cells of undetermined significance (57%; 95% CI 38-76%) for CIN2+ but the specificity was rather high (93%; 95% CI 89-97%). The HC2-assay showed a sensitivity for CIN2+ of 62% (95% CI 56-68%) and a specificity of 94% (95% CI 92-95%). Substantial interstudy variation was observed in the accuracy of the visual screening methods. Accuracy of visual methods and cytology increased over time, whereas performance of HC2 was constant. Results of visual tests and colposcopy were highly correlated. This study was the largest ever done that evaluates the cross-sectional accuracy of screening tests for cervical cancer precursors in developing countries. The merit of the study was that all screened subjects were submitted to confirmatory investigations avoiding to verification bias. A major finding was the consistently higher sensitivity but equal specificity of VILI compared with VIA. Nevertheless, some caution is warranted in the interpretation of observed accuracy measures, since a certain degree of gold standard misclassification cannot be excluded. Because of the correlation between visual screening tests and colposcopy and a certain degree of over-diagnosis of apparent CIN2+ by study pathologists, it is possible that both sensitivity and specificity of VIA and VILI were overestimated. Gold standard verification error could also explain the surprisingly low sensitivity of HC2, which contrasts with findings from other studies.
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Affiliation(s)
- Marc Arbyn
- Scientific Institute of Public Health, Unit of Cancer Epidemiology, Brussels, Belgium.
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Park SY, Follen M, Milbourne A, Rhodes H, Malpica A, MacKinnon N, MacAulay C, Markey MK, Richards-Kortum R. Automated image analysis of digital colposcopy for the detection of cervical neoplasia. JOURNAL OF BIOMEDICAL OPTICS 2008; 13:014029. [PMID: 18315387 DOI: 10.1117/1.2830654] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Digital colposcopy is a promising technology for the detection of cervical intraepithelial neoplasia. Automated analysis of colposcopic images could provide an inexpensive alternative to existing screening tools. Our goal is to develop a diagnostic tool that can automatically identify neoplastic tissue from digital images. A multispectral digital colposcope (MDC) is used to acquire reflectance images of the cervix with white light before and after acetic-acid application in 29 patients. A diagnostic image analysis tool is developed to identify neoplasia in the digital images. The digital image analysis is performed in two steps. First, similar optical patterns are clustered together. Second, classification algorithms are used to determine the probability that these regions contain neoplastic tissue. The classification results of each patient's images are assessed relative to the gold standard of histopathology. Acetic acid induces changes in the intensity of reflected light as well as the ratio of green to red reflected light. These changes are used to differentiate high-grade squamous intraepithelial (HGSIL) and cancerous lesions from normal or low-grade squamous intraepithelial (LGSIL) tissue. We report diagnostic performance with a sensitivity of 79% and a specificity of 88%. We show that diagnostically useful digital images of the cervix can be obtained using a simple and inexpensive device, and that automated image analysis algorithms show a potential to identify histologically neoplastic tissue areas.
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Affiliation(s)
- Sun Young Park
- University of Texas, Department of Biomedical Engineering, Austin, Texas 78712, USA
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Guillaud M, Benedet JL, Follen M, Crain BT, MacAulay C. Scan-and-treat methodology using Azure A fast stain as a cost-effective cervical cancer screening alternative to visual inspection with acetic acid. Gynecol Oncol 2007; 107:S256-9. [PMID: 17825881 DOI: 10.1016/j.ygyno.2007.07.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2007] [Accepted: 07/06/2007] [Indexed: 01/12/2023]
Affiliation(s)
- Martial Guillaud
- Department of Cancer Imaging, British Columbia Cancer Research Center, 601 West 10th Avenue, Vancouver, British Columbia, Canada V5Z 1L3
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Vázquez-Iglesias JL, Alonso-Aguirre P, Diz-Lois MT, Vázquez-Millán MA, Alvarez A, Lorenzo MJ. Acetic acid allows effective selection of areas for obtaining biopsy samples in Barrett's esophagus. Eur J Gastroenterol Hepatol 2007; 19:187-93. [PMID: 17301644 DOI: 10.1097/meg.0b013e3280102f5e] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE The aim of this study was to determine whether macroscopic changes resulting from acetic acid application on the surface of columnar-lined esophagus allow regular, nonmagnifying, endoscopic identification of areas presenting dysplasia and/or cancer in Barrett's esophagus. PATIENTS AND METHODS A total of 100 patients (mean age, 53 years; range, 27-86 years) under surveillance because of short-segment (n=71) and long-segment (n=29) Barrett's esophagus, with no alterations of columnar-lined esophagus on standard endoscopy, were enrolled. After endoscopic examination, 3% acetic acid was sprayed on columnar-lined esophagus. The subsequent appearance of the mucosa was classified as: (1) Normal pattern: uniform reticulum along the entire columnar-lined esophagus. (2) Abnormal pattern: reticulum presenting areas of rough or irregular appearance. Biopsy samples were obtained from areas of normal and abnormal patterns, and the results of the corresponding histological studies were compared. All endoscopies were performed by the same investigator. RESULTS The endoscopic appearance, after acetic acid application, corresponded to a normal pattern in 85% of cases and an abnormal pattern in 15%. The percentage of dysplasia and adenocarcinoma in biopsy specimens was significantly higher in patients with rough or irregular areas (86.7%) than in those with normal uniform reticulum (0%) (P< 0.001). Sensitivity for the identification of areas of dysplasia or adenocarcinoma was 100% (95% confidence interval: 71.7-100%). Specificity was 97.7% (95% confidence interval: 91.2-99.6%). CONCLUSIONS This prospective study shows that acetic acid test is useful for standard, nonmagnifying, endoscopic detection of dysplasia and cancer in Barrett's esophagus.
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Abstract
In developed countries, systematic screening programmes have reduced the morbidity and mortality resulting from cervical cancer. Cytological methods of screening have been the mainstay in these countries. Nevertheless, there is scant evidence that cytology-based screening has had any effect in reducing cervical cancer mortality in less-developed countries. In fact, the challenge in less-developed countries is surpassed by the complex array of problems that go far beyond the introduction of simplified technologies. Currently, there are two main issues on this subject: the assessment of simpler screening methods, and the evaluation of different strategies regarding which women to target and the screening interval. Achieving high rates of coverage and compliance of the target population through high-quality procedures has remained the most difficult goal to achieve. Nevertheless, it is believed that creativity, flexibility and well-focused use of resources can reduce the inequitable burden of cervical cancer borne by women in poor countries.
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Proceedings From the First Asia-Oceania Research Organisation on Genital Infections and Neoplasia (AOGIN) Meeting. Infect Dis Obstet Gynecol 2006. [PMCID: PMC1779609 DOI: 10.1155/idog/2006/59089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The First Asia-Oceania Research Organisation on Genital Infections
and Neoplasia (AOGIN) Meeting was held in Kota Kinabalu, Malaysia,
in July 2005. The conference covered regional issues relating to
infection with the human papillomavirus—epidemiology, virology,
and immunology, testing, screening, and prevention strategies—as
well as cervical cancer screening and its management.
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Sankaranarayanan R, Gaffikin L, Jacob M, Sellors J, Robles S. A critical assessment of screening methods for cervical neoplasia. Int J Gynaecol Obstet 2005; 89 Suppl 2:S4-S12. [PMID: 15823266 DOI: 10.1016/j.ijgo.2005.01.009] [Citation(s) in RCA: 189] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The objective of cervical cancer screening is to reduce cervical cancer incidence and mortality by detecting and treating precancerous lesions. Conventional cytology is the most widely used cervical cancer screening test. Although cytology has been effective in reducing the incidence of and mortality from cervical cancer in developed countries in both opportunistic and--more dramatically--organized national programs, it has been less successful and largely ineffective in reducing disease burden in low-resource settings where it has been implemented. Liquid-based cytology, testing for infection with oncogenic types of human papillomaviruses, visual inspection with 3-5% acetic acid, magnified visual inspection with acetic acid, and visual inspection with Lugol's iodine have been evaluated as alternative tests. Their test characteristics, and the applications and limitations in screening, are discussed with an emphasis on the work of the Alliance for Cervical Cancer Prevention over the past 5 years.
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Affiliation(s)
- R Sankaranarayanan
- International Agency for Research on Cancer (IARC), 150 cours Albert Thomas, 69372 Lyon Cedex 08, France.
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