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Mathematical Biosciences and... Apr 2022Cervical cancer is the second most commonly seen cancer in women. It affects the cervix portion of the vagina. The most preferred diagnostic test required for screening...
Cervical cancer is the second most commonly seen cancer in women. It affects the cervix portion of the vagina. The most preferred diagnostic test required for screening cervical cancer is the pap smear test. Pap smear is a time-consuming test as it requires detailed analysis by expert cytologists. Cytologists can screen around 100 to 1000 slides depending upon the availability of advanced equipment. Due to this reason Artificial intelligence (AI) based computer-aided diagnosis system for the classification of pap smear images is needed. There are some AI-based solutions proposed in the literature, still an effective and accurate system is under research. In this paper, the deep learning-based hybrid methodology namely DeepCyto is proposed for the classification of pap smear cytology images. The DeepCyto extracts the feature fusion vectors from pre-trained models and passes these to two workflows. Workflow-1 applies principal component analysis and machine learning ensemble to classify the pap smear images. Workflow-2 takes feature fusion vectors as an input and applies an artificial neural network for classification. The experiments are performed on three benchmark datasets namely Herlev, SipakMed, and LBCs. The performance measures of accuracy, precision, recall and F1-score are used to evaluate the effectiveness of the DeepCyto. The experimental results depict that Workflow-2 has given the best performance on all three datasets even with a smaller number of epochs. Also, the performance of the DeepCyto Workflow 2 on multi-cell images of LBCs is better compared to single cell images of other datasets. Thus, DeepCyto is an efficient method for accurate feature extraction as well as pap smear image classification.
Topics: Artificial Intelligence; Cervix Uteri; Female; Humans; Papanicolaou Test; Uterine Cervical Neoplasms; Vaginal Smears
PubMed: 35730264
DOI: 10.3934/mbe.2022301 -
Science Translational Medicine Dec 2023Late diagnosis and the lack of screening methods for early detection define high-grade serous ovarian cancer (HGSOC) as the gynecological malignancy with the highest...
Late diagnosis and the lack of screening methods for early detection define high-grade serous ovarian cancer (HGSOC) as the gynecological malignancy with the highest mortality rate. In the work presented here, we investigated a retrospective and multicentric cohort of 250 archival Papanicolaou (Pap) test smears collected during routine gynecological screening. Samples were taken at different time points (from 1 month to 13.5 years before diagnosis) from 113 presymptomatic women who were subsequently diagnosed with HGSOC (pre-HGSOC) and from 77 healthy women. Genome instability was detected through low-pass whole-genome sequencing of DNA derived from Pap test samples in terms of copy number profile abnormality (CPA). CPA values of DNA extracted from Pap test samples from pre-HGSOC women were substantially higher than those in samples from healthy women. Consistently with the longitudinal analysis of clonal pathogenic mutations, this assay could detect HGSOC presence up to 9 years before diagnosis. This finding confirms the continual shedding of tumor cells from fimbriae toward the endocervical canal, suggesting a new path for the early diagnosis of HGSOC. We integrated the CPA score into the EVA (early ovarian cancer) test, the sensitivity of which was 75% (95% CI, 64.97 to 85.79), the specificity 96% (95% CI, 88.35 to 100.00), and the accuracy 81%. This proof-of-principle study indicates that the early diagnosis of HGSOC is feasible through the analysis of genomic alterations in DNA from endocervical smears.
Topics: Female; Humans; Papanicolaou Test; Retrospective Studies; Early Detection of Cancer; Ovarian Neoplasms; DNA; Genomic Instability
PubMed: 38055801
DOI: 10.1126/scitranslmed.adi2556 -
BMC Women's Health Aug 2021Cervical cancer is one of the most frequent types of cancer in females. The Pap smear is one of the most essential ways of diagnosing and screening for this malignancy,...
BACKGROUND
Cervical cancer is one of the most frequent types of cancer in females. The Pap smear is one of the most essential ways of diagnosing and screening for this malignancy, and any failure can be caused by a number of causes. The current study sought to investigate barriers to Pap smear in Iranian women.
METHOD
This qualitative content analysis study was conducted in Iran in 2019. Data was gathered through focus groups and individual semi-structured interviews with 32 women and health professionals. The interviewees were chosen using a combination of purposive and theoretical sampling. The data was then analyzed using the content analysis approach developed by Graneheim and Lundman. Guba and Lincoln's criteria for establishing trustworthiness were explored.
RESULTS
Data analysis resulted in the identification of four primary categories, seventeen subcategories, and 186 original concepts. The main categories include weakness of health system, difficult accessibility, low health literacy, and socio-cultural factors.
CONCLUSION
By informing women about the necessity and importance of Pap smear, providing the conditions, facilities, and equipment to facilitate the testing process, and paying more attention to cultural and social factors in cervical cancer and Pap smear planning, interventions, and policies, barriers to Pap testing can be eliminated.
Topics: Female; Health Knowledge, Attitudes, Practice; Humans; Iran; Papanicolaou Test; Uterine Cervical Neoplasms; Vaginal Smears
PubMed: 34362366
DOI: 10.1186/s12905-021-01428-9 -
Medicine Oct 2015The aim of this study was to analyze the correlation between the first diagnosis of high-grade Vaginal Intraepithelial Neoplasia (HG-VaIN: VaIN 2-VaIN 3) and the...
The aim of this study was to analyze the correlation between the first diagnosis of high-grade Vaginal Intraepithelial Neoplasia (HG-VaIN: VaIN 2-VaIN 3) and the cytological abnormalities on the referral pap smear.All the women with histological diagnosis of HG-VaIN consecutively referred to the Gynecological Oncology Unit of the Aviano National Cancer Institute (Aviano, Italy) from January 1991 to April 2014 and with a pap smear performed in the 3 months before the diagnosis were considered, and an observational cohort study was performed.A total of 87 women with diagnosis of HG-VaIN were identified. Major cytological abnormalities (HSIL and ASC-H) on the referral pap smear were significantly more frequent than lesser abnormalities (ASC-US and LSIL) in postmenopausal women (64.9% vs 36.7%, P = 0.02) and in women with a previous diagnosis of HPV-related cervical preinvasive or invasive lesions (70.5% vs 39.5%, P = 0.01). Diagnosis of VaIN 3 was preceded by major cytological abnormalities in most of the cases (72.7% vs 27.3%, P < 0.001).The diagnosis of HG-VaIN can be preceded by different abnormalities on referral pap smear. Major abnormalities are usually reported in postmenopausal women and in women with previous cervical HPV-related disease. However, ASC-US or LSIL do not exclude HG-VaIN, especially VaIN2. An accurate examination of the whole vaginal walls (or vaginal vault) must be performed in all the women who underwent colposcopy for an abnormal pap smear, and a biopsy of all suspicious areas is mandatory.
Topics: Adolescent; Adult; Aged; Carcinoma in Situ; Cohort Studies; Female; Humans; Middle Aged; Neoplasm Grading; Papanicolaou Test; Retrospective Studies; Vaginal Neoplasms; Vaginal Smears; Young Adult
PubMed: 26496321
DOI: 10.1097/MD.0000000000001827 -
Public Health Sep 2022To systematically appraise the existing published literature on cervical cancer screening utilization, and associated barriers and facilitators, in Nepal. (Meta-Analysis)
Meta-Analysis Review
OBJECTIVE
To systematically appraise the existing published literature on cervical cancer screening utilization, and associated barriers and facilitators, in Nepal.
STUDY DESIGN
Systematic literature review and meta-analysis.
METHODS
PubMed/MEDLINE, CINAHL, Scopus, Embase, and, Google Scholar were systematically searched using Preferred Reporting Items for Systematic Review and Meta-Analysis guideline. All quantitative and qualitative studies reporting cervical cancer screening (using the Pap smear test or visual inspection with acetic acid or human papillomavirus test) utilization, barriers, and facilitators for screening were identified. A meta-analysis was performed to estimate Nepal's pooled cervical cancer screening utilization proportion.
RESULTS
The search yielded 97 records, of which 17 studies were included. Fifteen studies were quantitative and two were qualitative. Of the 17 studies, six were hospital-based and six were community-based. The pooled cervical cancer screening utilization proportion (using Pap smear test) among Nepalese women was 17% from the studies in the hospital settings, and 16% in the community. Six studies reported barriers to cervical cancer screening, of which four reported embarrassments related to the gynecological examination and a low level of knowledge on cervical cancer. Three (of four) studies reported health personnel, and two studies reported screening services-related facilitators for cervical cancer screening.
CONCLUSION
Our review reported that cervical cancer screening utilization (16%) is more than four times lower than the national target (70%) in Nepal. Multiple barriers such as low levels of knowledge and embarrassment are associated with cervical cancer screening utilization. Health personnel's gender, counseling, and privacy of screening services were commonly reported facilitators. These findings could help to inform future research, and policy efforts to increase cervical cancer screening utilization in Nepal.
Topics: Early Detection of Cancer; Female; Humans; Mass Screening; Nepal; Papanicolaou Test; Uterine Cervical Neoplasms; Vaginal Smears
PubMed: 35863158
DOI: 10.1016/j.puhe.2022.06.007 -
BMJ Open Quality Jul 2023The incidence of cervical cancer has decreased by 70% since the 1950s. Preventative measures include vaccination against HPV strains and Papanicolaou tests. Early...
BACKGROUND
The incidence of cervical cancer has decreased by 70% since the 1950s. Preventative measures include vaccination against HPV strains and Papanicolaou tests. Early identification of cervical cancer through routine screening can significantly improve patient outcomes.
MATERIALS AND METHODS
At our academic institution, Community Internal Medicine (CIM) Clinic, 63% of female patients aged 21-65 were compliant with cervical cancer screening. The opening of the 'Saturday Pap Smear Clinic' sought to address barriers by offering non-traditional appointment times on Saturday mornings with an all female staff. Our aim was to increase the cervical cancer screening rate by 1% within 12 weeks. Our team compared CIM (intervention) and family medicine (FM) (control) compliance rates from September 2021 to January 2022. Messages were sent to the patient indicating non-compliance and offering options to complete screening.
RESULTS
At the start of this study, 5239 CIM patients were cervical cancer screening non-compliant. Postintervention, cervical screening rates among non-compliant women within CIM improved by 1.2%. The intervention cohort, CIM patients, had a significant improvement in compliance compared with the control group, FM patients. White women between the ages of 50 and 65 comprised the majority of patients who used the 'Saturday Pap Smear Clinic'.
CONCLUSIONS
The availability of Saturday appointments for cervical cancer screening completion can enhance cervical cancer screening compliance among eligible women. Eliminating barriers for women can improve health outcomes.
Topics: Female; Humans; Middle Aged; Aged; Papanicolaou Test; Uterine Cervical Neoplasms; Vaginal Smears; Early Detection of Cancer; Appointments and Schedules
PubMed: 37451801
DOI: 10.1136/bmjoq-2023-002252 -
BioMed Research International 2022Cervical cancer is a leading cause of mortality among women globally. Approaches to reduce cervical cancer incidence and mortality are "screen-and-treat," where positive...
BACKGROUND
Cervical cancer is a leading cause of mortality among women globally. Approaches to reduce cervical cancer incidence and mortality are "screen-and-treat," where positive primary test only is used in the treatment and "screen, triage and treat," where treatment is based on positive primary and triage tests with/without histological analysis.
OBJECTIVES
To determine cervical screening outcomes among HIV-infected and noninfected women using VIA, Pap smear, and HPV-PCR cervical screening methods and to determine the sensitivity, specificity, PPV and NPV of VIA, Pap smear, and HPV-PCR as primary test and sequential triage based on abnormal histopathology among HIV-infected and noninfected women. . This was a comparative cross-sectional study where women aged 18-46 years women underwent cervical screening and colposcopy-biopsy test as a positive-confirmatory test in the Referral Hospitals of Eastern Kenya.
RESULTS
A total of 317 (HIV negative: 156/317 (49.2%) and HIV positive: 161/317 (50.8%)) women were enrolled. Of these 81/317 (25.6%), 84/317 (26.5%), 96/317 (30.2%), and 78/122 (63.9%) participants had VIA, HPV DNA-PCR, Pap smear, and cervical histology positive results, respectively; average: 27.4% (HIV positive: 21.5%; HIV negative: 5.9%). Majority of women with LSIL [17/317 (5.4%)], HSIL [22/317 (6.9%)], invasive cancer [5/317 (1.6%)], cervicitis [45/317 (14.2%], and candidiasis 47/317 (14.8%) were HIV-infected ( < 0.001). 78/317 (24.6%) participants had positive histology test [ASCUS: 34/317 (10.7%) CIN1:17/317 (5.3%), CIN2: 16/317 (5.0%), CIN3:6/317 (1.9%), and ICC: 5/317 (1.6%)] ( > 0.001). A higher primary diagnostic accuracy was established by HPV DNA-PCR (sensitivity: 95.5%; specificity: 92.6%) than Pap smear and VIA test while in triage testing, high sensitivity was obtained by HPV DNA-PCR parallel testing with VIA test (92.6%) and Pap smear test (92.7%) and VIA cotesting with Pap smear (99.9%). HIV-infected women had increased specificity and reduced sensitivity and diagnostic accuracy by both primary and triage testing approaches. . Abnormal cervical screening outcome was high among HIV-infected than noninfected women. HIV-infected women had significantly high cases of cervical neoplastic changes. The diagnostic value of primary tests increased upon concurrent testing with other test methods hence reducing the number of women who would have been referred for biopsy.
CONCLUSION
High sensitivity and specificity in detection of CIN+ were established among HIV-infected than HIV noninfected women by HPV DNA-PCR and Pap smear than VIA test. HPV DNA-PCR test and Pap smear are more accurate in primary and sequential triage cervical screening based on abnormal histopathology outcomes among HIV-infected than noninfected women.
Topics: Cross-Sectional Studies; Early Detection of Cancer; Female; HIV Infections; Humans; Papanicolaou Test; Papillomaviridae; Papillomavirus Infections; Sensitivity and Specificity; Triage; Uterine Cervical Dysplasia; Uterine Cervical Neoplasms; Vaginal Smears
PubMed: 36164451
DOI: 10.1155/2022/1930102 -
BMC Public Health Apr 2024Réunion Island is a French overseas territory located in the southern Indian Ocean, with a challenging socioeconomic and multicultural context. Compared to mainland...
BACKGROUND
Réunion Island is a French overseas territory located in the southern Indian Ocean, with a challenging socioeconomic and multicultural context. Compared to mainland France, Réunion has an overincidence and overmortality of cervical cancer. In order to investigate these two issues, it is important to evaluate the barriers and potential levers to Pap smear screening among female inhabitants of the island. We aimed to identify the specific socio-demographic factors, cultural factors, and living conditions associated with Pap smear screening in Réunion, with a view to increasing uptake.
METHODS
We conducted a Knowledge Attitude Behavior and Practices (KABP) survey on cervical cancer screening practices among women aged between 25 and 65 years old living in Réunion Island, selected using random digit dialing sampling. Data were collected using Computer Assistant Telephone Interviews. Weighted chi-squared tests and Student's t-tests were used to compare women who had up-to-date Pap smear screening with women who did not. Weighted logistic models were used to identify the factors associated with not having up-to-date screening.
RESULTS
A total of 1000 women were included in the study. Of these, 88.1% had a Pap smear test during the previous three years. Factors independently associated with not being up to date were as follows: aged over 55 (AOR 2.3 [1.2-4.3]), no children (AOR 2.5 [1.4-4.3]), having free universal health coverage (AOR 1.7 [1.1-2.7]), an income per unit consumption lower than 1500€ per month (AOR 2.0 [1.1-3.7]), low health literacy (AOR 2.7 [1.7-4.1]), not consulting a general practitioner in the prior 12 months (AOR 3.6 [2.0-6.5]), and a BMI > 30 (AOR 2.6 [1.5-4.4]).
CONCLUSIONS
This is the first large-scale survey focusing on recommended Pap smear screening uptake in Réunion Island. Although self-reported screening incidence was higher than in mainland France, national screening policies must take into account the island's diverse social and cultural characteristics (e.g., an ageing population, low health literacy), while implementing actions to fight against poverty and increase general access to healthcare.
Topics: Humans; Female; Papanicolaou Test; Middle Aged; Adult; Reunion; Aged; Health Knowledge, Attitudes, Practice; Uterine Cervical Neoplasms; Socioeconomic Factors; Early Detection of Cancer; France; Vaginal Smears; Cultural Characteristics
PubMed: 38654197
DOI: 10.1186/s12889-024-18633-4 -
Asian Pacific Journal of Cancer... Oct 2020The aim of the study was to explore and describe perceptions of midwives on Papanicolaou (Pap smear) test during pregnancy.
PURPOSE
The aim of the study was to explore and describe perceptions of midwives on Papanicolaou (Pap smear) test during pregnancy.
METHODS
The study used qualitative, exploratory type of design. A probability purposive sampling was used to sample 12 registered midwives based in gynaecological units in a public hospital in Tshwane District, South Africa. Open-ended questionnaires, field notes, and audio tape were used to collect data. Data analysis process involved grouping and categorization into themes and sub-themes.
RESULTS
This study showed that majority of midwives lacked scientific knowledge behind Pap smear test during pregnancy. Some of the participants could relate with the test and verbalized that there may be complications such as bleeding, which may lead to miscarriage.
CONCLUSIONS
Findings showed that midwives were not performing Pap smear tests among pregnant women due lack of knowledge. This points out that Pap smear test is not prioritised as a secondary preventive tool at facility level. It is therefore recommended that refresher workshops be conducted at hospital level.
Topics: Adult; Early Detection of Cancer; Female; Health Knowledge, Attitudes, Practice; Humans; Midwifery; Papanicolaou Test; Perception; Pregnancy; South Africa; Surveys and Questionnaires; Uterine Cervical Neoplasms; Vaginal Smears
PubMed: 33112565
DOI: 10.31557/APJCP.2020.21.10.3039 -
Australian Journal of General Practice Jul 2018
Topics: Adult; Aged; Early Detection of Cancer; Female; Human Papillomavirus DNA Tests; Humans; Mass Screening; Middle Aged; Papanicolaou Test; Uterine Cervical Neoplasms
PubMed: 30114878
DOI: 10.31128/AJGP-01-18-4464