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1.
Gynecol Oncol ; 180: 146-151, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38091774

RESUMO

BACKGROUND: Long-term effects of primary human papillomavirus (HPV) screening on cervical cancer incidence and mortality are still missing. We conducted a long-term follow-up of the Finnish randomized HPV screening trial, the first HPV screening trial run within the routine screening program, to assess these measures. METHODS: During 2003-2008, over 236,000 individuals were randomized (1:1) to HPV and cytology screening arms in Southern Finland. To compare the study arms, we calculated the cervical cancer incidence and mortality rate ratios using Poisson regression. RESULTS: During a total of 3.5 million person-years of follow-up, we observed 129 cervical cancers and 32 cervical cancer deaths in the cytology arm, 139 cervical cancers and 32 cervical cancer deaths in the HPV arm. Compared to the cytology arm, in the HPV arm, the incidence rate ratio was 1.08 (95% CI 0.85-1.37), and the mortality rate ratio was 1.01 (95% CI 0.61-1.64). CONCLUSIONS: We studied the effects of HPV screening on both cervical cancer incidence and mortality for the first time in a setting with an already well-established, high-quality cytology screening program. In this kind of setting with a low incidence of cervical cancer, HPV and cytology screening showed similar effectiveness. HPV screening provides, however, an objective, validated test system and enables self-sampling which can improve screening coverage. More attention is needed yet to ensure the balance between the harms and benefits of HPV screening.


Assuntos
Infecções por Papillomavirus , Displasia do Colo do Útero , Neoplasias do Colo do Útero , Feminino , Humanos , Neoplasias do Colo do Útero/diagnóstico , Neoplasias do Colo do Útero/epidemiologia , Neoplasias do Colo do Útero/prevenção & controle , Seguimentos , Infecções por Papillomavirus/diagnóstico , Infecções por Papillomavirus/epidemiologia , Detecção Precoce de Câncer , Esfregaço Vaginal , Papillomaviridae , Programas de Rastreamento
2.
Prev Med ; 185: 108031, 2024 Jun 06.
Artigo em Inglês | MEDLINE | ID: mdl-38849059

RESUMO

OBJECTIVE: Around 70% of vaginal cancers and 40-50% of vulvar cancers are attributable to human papillomavirus (HPV). Globally the burden of these diseases is estimated to grow due to the increasing HPV prevalence and rapidly aging global population. We aimed to examine if HPV screening for cervical cancer has an additional beneficial effect in preventing vaginal and vulvar cancers. To assess this, we used long-term follow-up data from the Finnish randomized HPV screening trial. METHODS: Between 2003 and 2008, over 236,000 women were individually randomized (1:1) to primary HPV or cytology screening in Southern Finland. We followed this cohort up to the year 2020. To compare the study arms, we calculated site-specific and pooled incidence rate ratios (IRRs) and mortality rate ratios (MRRs) for vaginal and vulvar cancers using Poisson regression. RESULTS: During 3,5 million person-years of follow-up, the IRR for vaginal cancer in the HPV arm compared to the cytology arm was 0.40 (95% CI 0.17-0.88) and the corresponding MRR was 0.74 (95% 0.21-2.24). The corresponding IRR for vulvar cancer was 0.73 (95% 0.50-1.08) and the MRR was 0.64 (95% 0.23-1.62). The pooled IRR was 0.67 (95% 0.47 ̶ 0.95) and MRR 0.67 (95% 0.31 ̶ 1.37). CONCLUSION: We found lower incidence of vaginal cancers with HPV screening compared to cytology screening. To validate our results, we recommend analyzing data on vaginal and vulvar cancers also from other HPV screening studies.

3.
Eur J Public Health ; 34(2): 354-360, 2024 Apr 03.
Artigo em Inglês | MEDLINE | ID: mdl-38261374

RESUMO

BACKGROUND: Cervical cytology has been the primary method of cervical cancer screening for decades. Tests that detect viral HPV are shown in several randomized trials to provide better protection against cancer compared with cytology. HPV-based screening has been implemented alongside cytology in the Nordic countries for several years. The aim of this study was to compare cytology and HPV-based screening in the colposcopy referrals and detection rates of cervical lesions. METHODS: Individual-level screening data from Finland, Iceland, Norway and Sweden were harmonized and aggregated locally. We utilized data for tests taken during years 2015-17 and biopsies taken during years 2015-19 to allow 24 months of follow-up. Age-standardized estimates and age-adjusted risk ratios for six different outcomes of screening management were calculated. RESULTS: The age-standardized colposcopy rates were higher in HPV-based testing compared with cytology in Finland (3.5% vs. 0.9%) and Norway (6.0% vs. 4.1%) but lower in Sweden (3.7% vs. 4.9%). The relative detection rate of cervical intraepithelial neoplasia grade 2 and above in HPV-based testing compared with cytology was highest in Finland (RR 2.37, 95% CI 2.13-2.63) and Norway (RR 1.66, 95% CI 1.57-1.72) while in Sweden the difference was not statistically significant (RR 0.98, 95% CI 0.95-1.00). CONCLUSIONS: The effects of implementing HPV screening varied by country as different screening algorithms were implemented. HPV-based screening increases colposcopy rates mainly through referrals from increased repeat testing and detection rate is therefore significantly higher compared with cytology. Monitoring of these indicators in subsequent rounds of HPV-based screening remains essential.


Assuntos
Infecções por Papillomavirus , Displasia do Colo do Útero , Neoplasias do Colo do Útero , Feminino , Humanos , Neoplasias do Colo do Útero/diagnóstico , Infecções por Papillomavirus/diagnóstico , Detecção Precoce de Câncer , Displasia do Colo do Útero/diagnóstico , Displasia do Colo do Útero/patologia , Programas de Rastreamento/métodos , Esfregaço Vaginal , Países Escandinavos e Nórdicos/epidemiologia
4.
Gynecol Oncol ; 167(1): 73-80, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35963790

RESUMO

OBJECTIVE: Primary HPV screening programmes for cervical cancer have been implemented in many European countries using a cytology triage. Nonetheless, the optimal cytology triage strategy for minimizing the harms and maximizing the benefits is yet unclear. We identified key characteristics of different algorithms for HPV screening with cytology triage. METHODS: Using the Finnish randomized HPV screening trial data, we formulated five post-hoc algorithms for HPV screening with a cytology triage, one for HPV screening without a triage and one for cytology screening. Sensitivity, specificity, positive predictive value, colposcopy referral rate and cumulative sensitivity for CIN II + s detected during the first and second screening rounds of the trial were calculated for all algorithms. RESULTS: In the first screening round, direct referral of HPV positives to colposcopy led to the highest sensitivity (94%) accompanied by the lowest specificity (93%). Following HPV positives up with one repeat screen showed 86% sensitivity and 97% specificity. The corresponding figures with two repeat screens were 84% and 98%. In HPV algorithms, where cytology negative HPV positive individuals had no follow-up, the sensitivities were 65-82% and the specificities 98-99%. The Cytology algorithm had a low sensitivity (69%) with a high specificity (99%). Compared to the first round, the second-round sensitivities were lower and specificities similar or higher. CONCLUSIONS: The best balance between sensitivity and specificity was achieved by an HPV algorithm with two repeated follow-up tests. However, all HPV algorithms with cytology triage increased colposcopy volume more than the cytology algorithm and thus provoked overdiagnosis.


Assuntos
Infecções por Papillomavirus , Displasia do Colo do Útero , Neoplasias do Colo do Útero , Colposcopia , Detecção Precoce de Câncer , Feminino , Humanos , Programas de Rastreamento , Papillomaviridae , Gravidez , Triagem , Esfregaço Vaginal
5.
Prev Med ; 157: 106990, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-35150749

RESUMO

A faecal immunochemical test (FIT) screening pilot was introduced in Finland in 2019 with sex-specific screening strategies. This study aims to model cost-effectiveness of sex-specific strategies for the whole population, and to assess whether the current strategies are optimal. We developed separate MISCAN-Colon models, including different FIT performances, for the Finnish men and women using the first-year data of the FIT screening pilot. We evaluated 180 FIT strategies varying in FIT cut-off, screening interval, age to start, and age to stop screening, and compared them to no-screening by sex. We used incremental cost-effectiveness ratios (ICERs) to identify the optimal strategy after combining all male and female strategies and restricting the analysis by costs and referral rate to diagnostic colonoscopies. Offering annual FIT screening with a cut-off of 25 µg/g at 50-79 years in men and with a cut-off of 10 µg/g at 55-69 years in women was optimal. This combined strategy prevented 28% of colorectal cancer (CRC) cases and 55% of CRC deaths with acceptable costs (ICER = 9000€/life-years gained). Screening at the current target age of 60-74 years was suboptimal for both sexes. Among strategies with the same target age and interval for both sexes, expected benefits from optimal screening were lower but still reasonable. Our results support a wider age range of screening in men, and a lower cut-off for a positive test in women when restrictions on colonoscopy capacity and costs are in place. National FIT screening program should start at younger age.


Assuntos
Neoplasias Colorretais , Detecção Precoce de Câncer , Idoso , Colonoscopia , Neoplasias Colorretais/diagnóstico , Neoplasias Colorretais/epidemiologia , Neoplasias Colorretais/prevenção & controle , Análise Custo-Benefício , Detecção Precoce de Câncer/métodos , Feminino , Finlândia , Humanos , Masculino , Programas de Rastreamento/métodos , Pessoa de Meia-Idade , Sangue Oculto
6.
Acta Obstet Gynecol Scand ; 101(3): 323-333, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35040121

RESUMO

INTRODUCTION: The incidence of and mortality from cancers of the cervix uteri and corpus uteri are underestimated if the presence of uterine cancers, where the exact topography (site of origin) is not specified, is omitted. In this paper we present the corrected figures on mortality from and incidence of cervix and corpus uteri cancers in the Nordic countries by reallocating unspecified uterine cancer deaths and cases to originate either from the corpus uteri or cervix uteri. To further validate the accuracy of reallocation, we also analyzed how well the reallocation captures the changes occurring as the result of a transition in cause of death coding in Norway that took place in 2005. MATERIAL AND METHODS: This study uses data available in the NORDCAN database, which contains aggregated cancer data from all the Nordic countries for the years 1960-2016. The unspecified uterine cancer cases and deaths were reallocated to either cervix uteri or corpus uteri based on the estimated probability that follows the distribution of cases and deaths with verified topography. The estimated proportions of cases and deaths for both cancers were calculated for each combination of age group, year, and country as a proportion of cases (and deaths, respectively) with known topography. Annual age-standardized rates were calculated by direct age-adjustment. RESULTS: The proportions of unspecified uterine cancers were higher in the mortality data than in incidence data, with mean values for 1960-2016 ranging between 5.1% and 26.6% and between 0.2% and 6.8% by country, respectively. In the Nordic countries combined, the reallocation increased the number of cases by 4% and deaths by approximately 20% for both cancers. Finland was the only Nordic country where the mortality rate did not increase substantially after reallocation. CONCLUSIONS: The reallocation procedure had a significant impact on mortality from cancers of the cervix and corpus uteri for countries where the proportion of cancer deaths coded as uterus, not otherwise specified, is substantial. More effort to validate cause of death data with incidence data from cancer registries is warranted to avoid erroneous conclusions of temporal trends based on uncorrected cancer burden.


Assuntos
Neoplasias do Colo do Útero , Neoplasias Uterinas , Feminino , Humanos , Incidência , Sistema de Registros , Países Escandinavos e Nórdicos/epidemiologia , Neoplasias do Colo do Útero/epidemiologia , Neoplasias Uterinas/epidemiologia
7.
Eur J Public Health ; 32(2): 188-190, 2022 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-34910145

RESUMO

Current health promotion and early cancer detection programmes yield different results depending on the social group and have a different impact among individuals. Thus, they may generate social inequalities in health. The Contest of Best Practices tackling social inequalities in cancer prevention is an initiative that emerged in the framework of the Innovative Partnership for Action Against Cancer Joint Action. This contest identifies interventions that have proven to be effective in reducing social inequalities in cancer prevention in European countries, with the aim of sharing lessons learned and inspiring solutions, as well as facilitating replication in other health systems and similar social settings.


Assuntos
Promoção da Saúde , Neoplasias , Atenção à Saúde , Europa (Continente) , Promoção da Saúde/métodos , Disparidades nos Níveis de Saúde , Humanos , Neoplasias/prevenção & controle , Fatores Socioeconômicos
8.
Gynecol Oncol ; 162(2): 315-321, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-34074539

RESUMO

OBJECTIVE: It has been proposed that cervical cancer screening should be continued in women with previous abnormal results or irregular attendance. We examined the coverage and factors that might influence cervical testing beyond the age range of the organized cervical screening programme in Finland. The national programme invites women in every five years least until the age of 60. After the stopping age, only opportunistic service is available. METHODS: Data on cervical testing were collected from the Mass Screening Registry and providers of opportunistic Pap/HPV-testing and were linked with information on socio-economic variables. The study included 373,353 women who had at least one invitation to the national screening programme between ages 50-60 years, and who were aged 65-74 years in the follow-up period 2006-2016. Multivariable binomial regression models were conducted to determine associations. RESULTS: Altogether 33% of the study population had been tested at least once at ages 65-74 years. Previous regular screening attendance (adjRR 1.70; 95% CI 1.67-1.73) and earlier abnormal results (adjRR 2.08; 95% CI 2.04-2.12) were most clearly related to higher testing adherence at older age. Other factors related to higher testing adherence were urban area of residence, domestic mother tongue, high education level, and high socio-economic status. CONCLUSION: Testing at older age was frequent with normal results, whereas only a small proportion of women with earlier abnormal results or irregular attendance were tested. The upper age limit of the national programme should be raised to 65 years, and the invitations thereafter should be targeted to selected high-risk groups.


Assuntos
Detecção Precoce de Câncer/estatística & dados numéricos , Infecções por Papillomavirus/diagnóstico , Cooperação do Paciente/estatística & dados numéricos , Displasia do Colo do Útero/diagnóstico , Neoplasias do Colo do Útero/prevenção & controle , Adulto , Assistência ao Convalescente , Fatores Etários , Idoso , Colo do Útero/patologia , Colo do Útero/virologia , Estudos de Coortes , Detecção Precoce de Câncer/economia , Detecção Precoce de Câncer/normas , Feminino , Finlândia , Disparidades em Assistência à Saúde/estatística & dados numéricos , Humanos , Cobertura do Seguro/economia , Cobertura do Seguro/normas , Cobertura do Seguro/estatística & dados numéricos , Pessoa de Meia-Idade , Teste de Papanicolaou/economia , Teste de Papanicolaou/normas , Teste de Papanicolaou/estatística & dados numéricos , Infecções por Papillomavirus/economia , Infecções por Papillomavirus/patologia , Infecções por Papillomavirus/virologia , Sistema de Registros/estatística & dados numéricos , Fatores Socioeconômicos , Neoplasias do Colo do Útero/patologia , Neoplasias do Colo do Útero/virologia , Esfregaço Vaginal/economia , Esfregaço Vaginal/estatística & dados numéricos , Displasia do Colo do Útero/economia , Displasia do Colo do Útero/patologia , Displasia do Colo do Útero/virologia
9.
Acta Oncol ; 60(10): 1264-1271, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34424113

RESUMO

BACKGROUND: Despite the elaborate history of statistical reporting in the USSR, Russia established modern population-based cancer registries (PBCR) only in the 1990s. The quality of PBCRs data has not been thoroughly analyzed. This study aims at assessing the comparability and validity of cancer statistics in regions of the Northwestern Federal District (NWFD) of Russia. MATERIAL AND METHODS: Data from ten Russian regional PBCRs covering ∼13 million (∼5 million in St. Petersburg) were processed in line with IARC/IACR and ENCR recommendations. We extracted and analyzed all registered cases but focused on cases diagnosed between 2008 and 2017. For comparability and validity assessment, we applied established qualitative and quantitative methods. RESULTS: Data collection in NWFD is in line with international standards. Distributions of diagnosis dates revealed higher variation in several regions, but overall, distributions are relatively uniform. The proportion of multiple primaries between 2008 and 2017 ranged from 6.7% in Vologda Oblast to 12.4% in Saint-Petersburg. We observed substantial regional heterogeneity for most indicators of validity. In 2013-2017, proportions of morphologically verified cases ranged between 61.7 and 89%. Death certificates only (DCO) cases proportion was in the range of 1-14% for all regions, except for Saint-Petersburg (up to 23%). The proportion of cases with a primary site unknown was between 1 and 3%. Certain cancer types (e.g., pancreas, liver, hematological malignancies, and CNS tumors) and cancers in older age groups showed lower validity. CONCLUSION: While the overall level of comparability and validity of PBCRs data of four out of ten regions of NWFD of Russia meets the international standards, differences between the regions are substantial. The local instructions for cancer registration need to be updated and implemented. The data validity assessment also reflects pitfalls in the quality of diagnosis of certain cancer types and patient groups.


Assuntos
Neoplasias Hematológicas , Neoplasias , Idoso , Humanos , Incidência , Neoplasias/epidemiologia , Sistema de Registros , Federação Russa/epidemiologia
10.
Int J Cancer ; 147(7): 1855-1863, 2020 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-32159224

RESUMO

Comparable performance indicators for breast cancer screening in the European Union (EU) have not been previously reported. We estimated adjusted breast cancer screening positivity rate (PR) and detection rates (DR) to investigate variation across EU countries. For the age 50-69 years, the adjusted EU-pooled PR for initial screening was 8.9% (cross-programme variation range 3.2-19.5%) while DR of invasive cancers was 5.3/1,000 (range 3.8-7.4/1,000) and DR of ductal carcinoma in situ (DCIS) was 1.3/1,000 (range 0.7-2.7/1,000). For subsequent screening, the adjusted EU-pooled PR was 3.6% (range 1.4-8.4%), the DR was 4.0/1,000 (range 2.2-5.8/1,000) and 0.8/1,000 (range 0.5-1.3/1,000) for invasive and DCIS, respectively. Adjusted performance indicators showed remarkable heterogeneity, likely due to different background breast cancer risk and awareness between target populations, and also different screening protocols and organisation. Periodic reporting of the screening indicators permits comparison and evaluation of the screening activities between and within countries aiming to improve the quality and the outcomes of screening programmes. Cancer Screening Registries would be a milestone in this direction and EU Screening Reports provide a fundamental contribution to building them.


Assuntos
Neoplasias da Mama/diagnóstico , Detecção Precoce de Câncer/métodos , União Europeia/organização & administração , Idoso , Feminino , Humanos , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Indicadores de Qualidade em Assistência à Saúde
11.
Int J Cancer ; 147(1): 9-13, 2020 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-31970768

RESUMO

The 2003 European Council recommendation urging the Member States to introduce or scale up breast, cervical and colorectal cancer screening through an organized population-based approach has had a remarkable impact. We argue that the recommendation needs to be updated for at least two sets of reasons. First, some of the current clinical guidelines include new tests or protocols that were not available at the time of the Council document. Some have already been adopted by organized screening programs, such as newly defined age ranges for mammography screening, Human Papillomavirus (HPV)-based cervical cancer screening, fecal immunochemical test (FIT) and sigmoidoscopy for colorectal cancer screening. Second, the outcomes of randomized trials evaluating screening for lung and prostate cancer have been published recently and the balance between harms and benefits needs to be pragmatically assessed. In the European Union, research collaboration and networking to exchange and develop best practices should be regularly supported by the European Commission. Integration between primary and secondary preventive strategies through comprehensive approaches is necessary not only to maximize the reduction in cancer burden but also to control the rising trend of other noncommunicable diseases sharing the same risk factors.


Assuntos
Neoplasias da Mama/diagnóstico , Neoplasias Colorretais/diagnóstico , Neoplasias do Colo do Útero/diagnóstico , Adulto , Idoso , Detecção Precoce de Câncer/métodos , Detecção Precoce de Câncer/normas , União Europeia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Guias de Prática Clínica como Assunto , Adulto Jovem
12.
Prev Med ; 139: 106219, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32693176

RESUMO

An invitational organized cervical cancer screening together with widely spread opportunistic testing has coexisted for decades in Finland. The aim of this study was to examine the coverage of cervical tests by age, socioeconomic status, ethnicity and municipality type within and outside the organized screening program. We had a cohort of women of whom 1,2 million were in the target age range of screening and residing in Finland in 2010-2014. Data on Pap and/or HPV -tests within and outside the screening program were collected from the Mass Screening Registry, the pathology laboratories and the health insurance reimbursement registry and five-year population coverages of tests were reported. The total test coverage was 86.0%; 95% CI, (85.8-86.1), and was notably lower for those with an unknown socioeconomic status and pensioners (68.8%; 95% CI, (67.9-69.6) and 77.1%; 95% CI, (76.5-77.6), respectively) compared to upper-level employers (89.8%; 95% CI, (89.5-90.2)). Coverage was also lower for non-native speaking women (72.4%; 95% CI, (71.8-73.0)) compared to native speakers (86.9%; 95% CI, (86.7-87.0)) and for women living in urban municipalities (85.5%; 95% CI, (85.3-85.7)) compared to semi-urban (87.4%; 95% CI, (87.0-87.8)). Although overall coverage was high, tests within and outside the program seemed to concentrate on women with presumably good access to health services. Tests outside the program were especially common among young women who are at a low risk of invasive cervical cancer. Efforts should be made to reduce excessive opportunistic testing and to increase attendance at the program among hard-to-reach populations.


Assuntos
Teste de Papanicolaou , Neoplasias do Colo do Útero , Cidades , Detecção Precoce de Câncer , Etnicidade , Feminino , Finlândia , Humanos , Programas de Rastreamento , Classe Social , Neoplasias do Colo do Útero/diagnóstico , Esfregaço Vaginal
13.
Gut ; 68(7): 1232-1244, 2019 07.
Artigo em Inglês | MEDLINE | ID: mdl-30530530

RESUMO

OBJECTIVE: To present comparative data about the performance of colorectal cancer (CRC) screening programmes in the European Union Member States (EU MSs). DESIGN: Cross-sectional study. We analysed key performance indicators-participation rate, positivity rate (PR), detection rate (DR) and positive predictive value for adenomas and CRC-based on the aggregated quantitative data collected for the second EU screening report. We derived crude and pooled (through a random effects model) estimates to describe and compare trends across different MSs/regions and screening protocols. RESULTS: Participation rate was higher in countries adopting faecal immunochemical test (FIT) (range: 22.8%-71.3%) than in those using guaiac faecal occult blood test (gFOBT) (range 4.5%-66.6%), and it showed a positive correlation (ρ=0.842, p<0.001) with participation in breast cancer screening in the same areas. Screening performance showed a large variability. Compliance with referral for colonoscopy (total colonoscopy (TC)) assessment ranged between 64% and 92%; TC completion rate ranged between 92% and 99%. PR and DR of advanced adenomas and CRC were higher in FIT, as compared with gFOBT programmes, and independent of the protocol among men, older subjects and those performing their first screening. CONCLUSIONS: The variability in the results of quality indicators across population-based screening programmes highlights the importance of continuous monitoring, as well as the need to promote quality improvement efforts, as recommended in the EU guidelines. The implementation of monitoring systems, ensuring availability of data for the entire process, together with initiatives aimed to enhance reproducibility of histology and quality of endoscopy, represent a priority in screening programmes management.


Assuntos
Adenoma/diagnóstico , Neoplasias Colorretais/diagnóstico , Detecção Precoce de Câncer/estatística & dados numéricos , União Europeia , Aceitação pelo Paciente de Cuidados de Saúde/estatística & dados numéricos , Idoso , Estudos Transversais , Utilização de Instalações e Serviços , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Melhoria de Qualidade
14.
Int J Cancer ; 144(12): 2928-2935, 2019 06 15.
Artigo em Inglês | MEDLINE | ID: mdl-30511466

RESUMO

Efforts to reduce mortality through early detection and diagnosis has intensified in the recent decade. An important risk factor, 'breast symptoms' reported by women during screening visit, remains overlooked. In this population based matched cohort study using Finnish National Breast Cancer Screening Program (FNBCSP), we assessed the association between breast symptoms reported at screening visit and the risk of cancer incidence and breast cancer mortality and all-cause mortality followed-up over a period of 24 years. For each visit with symptoms, non-symptomatic controls were matched (1:1 for lump and retraction; 1:2 for nipple discharge) based on age at screening visit, year of invitation, number of invited visits, and municipality of invitation. Women who reported lump or retraction had about two-fold risk of breast cancer incidence, three-fold risk of breast cancer mortality and all-cause mortality respectively as compared to women without respective symptoms (p-value<0.05). We found a substantial difference (p-value<0.05) in mortality rates throughout the follow-up period between symptomatic and asymptomatic group. In absolute terms, after the follow-up period for women who reported lump, 180 died from breast cancer as compared to 70 deaths in those without lump, per 10,000 person-years of follow-up, and 315 versus 160 all-cause deaths per 10,000 person-years in women with and without lump respectively. our study provides comprehensive evidence that women with breast symptoms remain in a higher risk of dying over a very long period. The findings indicate needs to develop improvements in the guidelines for screening and clinical services for women presenting with symptoms.


Assuntos
Neoplasias da Mama/epidemiologia , Idoso , Neoplasias da Mama/mortalidade , Neoplasias da Mama/fisiopatologia , Estudos de Coortes , Detecção Precoce de Câncer/métodos , Detecção Precoce de Câncer/estatística & dados numéricos , Feminino , Finlândia/epidemiologia , Humanos , Incidência , Estudos Longitudinais , Mamografia/estatística & dados numéricos , Pessoa de Meia-Idade , Estudos Prospectivos , Sistema de Registros
15.
Br J Cancer ; 120(7): 773-774, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30837683

RESUMO

The authors report that the labels indicating the symptom types and no symptom lines in the original version of Figure 2 were missing. The correct version of Figure 2 with the labels included is provided below.

16.
Breast Cancer Res Treat ; 177(3): 761-765, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31250357

RESUMO

PURPOSE: Nuclear grade is an important indicator of the biological behaviour of ductal carcinoma in situ (DCIS). De-escalation of treatment has been suggested for low-grade DCIS. Our aim is to estimate the relative rate of progression of DCIS by nuclear grade by analysing the distribution of nuclear grade by detection at initial or subsequent screening. METHODS: We asked International Cancer Screening Network sites to complete, based on their screening and clinical databases, an aggregated data file on DCIS detection, diagnosis and treatment. RESULTS: Eleven screening programs reported 5068 screen-detected pure DCIS in nearly 7 million screening tests in women 50-69 years of age. For all programs combined, low-grade DCIS were 20.1% (range 11.4-31.8%) of graded DCIS, intermediate grade 31.0% and high grade 48.9%. Detection rates decreased more steeply from initial to subsequent screening in low compared to high-grade DCIS: the ratios of subsequent to initial detection rates were 0.39 for low grade, 0.51 for intermediate grade, and 0.75 for high grade (p < 0.001). CONCLUSIONS: These results suggest that the duration of the preclinical detectable phase is longer for low than for high-grade DCIS. The findings from this large multi-centre, international study emphasize that the management of low-grade DCIS should be carefully scrutinized in order to minimize overtreatment of screen-detected slow-growing or indolent lesions. The high variation by site in the proportion of low grade suggests that further pathology standardization and training would be beneficial.


Assuntos
Neoplasias da Mama/diagnóstico , Carcinoma Intraductal não Infiltrante/diagnóstico , Idoso , Neoplasias da Mama/epidemiologia , Carcinoma Intraductal não Infiltrante/epidemiologia , Progressão da Doença , Detecção Precoce de Câncer , Feminino , Humanos , Programas de Rastreamento , Pessoa de Meia-Idade , Gradação de Tumores , Estadiamento de Neoplasias , Estados Unidos/epidemiologia
17.
Acta Oncol ; 58(9): 1199-1204, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31106635

RESUMO

Introduction: Quality assurance and improvement of cancer screening programs require up-to-date monitoring systems and evidence-based indicators. National quality reports exist but the definition and calculation of indicators vary making comparisons between countries difficult. The aim is to stimulate collaborative research and quality improvements in screening through freely available, comparable and regularly updated quality indicators. The project currently includes data on cervical cancer screening but population-based screening programs for breast cancer and colorectal cancer may be included in the future. Material and methods: Through a network of Nordic and Baltic screening managers, population-based individual screening data from each country were converted to standard format in each collaborative center, aggregated by the same R program script and then uploaded to the NordScreen online platform. Registry data included all cervical tests except for Finland where only tests based on invitation are included. Results: The NordScreen collaboration has so far collated standardized indicators based on 32.8 million screening tests from four Nordic countries and Estonia. Interactive comparison of test coverage and distribution of women by number of tests are currently possible online. In 2016, the test coverage within a time interval of 5.5 years in the age group 30-64 year-olds was between 78 and 84% in Iceland, Norway and Sweden whereas 70% in Finland. The application allows users to choose indicator specifications interactively. Conclusions: NordScreen is a pilot model for comparable, reliable and accessible cross-country comparisons of cancer screening. Comparability between countries is enhanced by a uniform data structure and standardized calculations. The comparison of coverage rates to national figures shows that the methods used nationally and in the NordScreen project produce similar results.


Assuntos
Programas de Rastreamento/estatística & dados numéricos , Interface Usuário-Computador , Neoplasias do Colo do Útero/diagnóstico , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Países Bálticos , Feminino , Humanos , Programas de Rastreamento/métodos , Programas de Rastreamento/organização & administração , Pessoa de Meia-Idade , Projetos Piloto , Sistema de Registros , Países Escandinavos e Nórdicos , Software , Adulto Jovem
18.
Occup Environ Med ; 76(9): 603-610, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-31296664

RESUMO

OBJECTIVE: Study carcinogenicity of inorganic lead, classified as 'probably carcinogenic' to humans by the International Agency for Research on Cancer (brain, lung, kidney and stomach). METHODS: We conducted internal and external analyses for cancer incidence in two cohorts of 29 874 lead-exposed workers with past blood lead data (Finland, n=20 752, Great Britain=9122), with 6790 incident cancers. Exposure was maximum measured blood lead. RESULTS: The combined cohort had a median maximum blood lead of 29 µg/dL, a mean first blood lead test of 1977, and was 87% male. Significant (p<0.05) positive trends, using the log of maximum blood lead, were found for brain cancer (malignant), Hodgkin's lymphoma, lung cancer and rectal cancer, while a significant negative trend was found for melanoma. Borderline significant positive trends (0.05≤p≤0.10) were found for oesophageal cancer, meningioma and combined malignant/benign brain cancer. Categorical analyses reflected these trends. Significant interactions by country were found for lung, brain and oesophageal cancer, with Finland showing strong positive trends, and Great Britain showing modest or no trends. Larynx cancer in Finland also showed a positive trend (p=0.05). External analyses for high exposure workers (maximum blood lead >40 µg/dL) showed a significant excess for lung cancer in both countries combined, and significant excesses in Finland for brain and lung cancer. The Great Britain data were limited by small numbers for some cancers, and limited variation in exposure. CONCLUSIONS: We found strong positive incidence trends with increasing blood lead level, for several outcomes in internal analysis. Two of these, lung and brain cancer, were sites of a priori interest.


Assuntos
Chumbo/efeitos adversos , Chumbo/sangue , Neoplasias/epidemiologia , Doenças Profissionais/epidemiologia , Exposição Ocupacional/efeitos adversos , Estudos de Coortes , Feminino , Finlândia/epidemiologia , Humanos , Incidência , Masculino , Neoplasias/sangue , Doenças Profissionais/sangue , Modelos de Riscos Proporcionais , Reino Unido/epidemiologia
19.
Scand J Public Health ; 47(5): 482-491, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-31313982

RESUMO

Aims: Productivity losses related to premature cancer mortality have been assessed for most developed countries but results for Russia are limited to cross-sectional reports. The aim of this study was to quantify productivity costs due to cancer mortality in Russia between 2001 and 2015 and project this to 2030. Methods: Cancer mortality data (2001-2015) were acquired from the State Cancer Registry, whereas population data, labour force participation rates and annual earnings were retrieved from the Federal State Statistics Service. Cancer mortality was projected to 2030 and the human capital approach was applied to estimate productivity losses. Results: The total annual losses increased from US6.5b in 2001-2005 to US$8.1b in 2011-2015, corresponding to 0.24% of the annual gross domestic product. The value is expected to remain high in 2030 (US$7.5b, 0.14% of gross domestic product). Productivity losses per cancer death are predicted to grow faster in women (from US$18,622 to US$22,386) than in men (from US$25,064 to US$28,459). Total losses were found to be highest for breast cancer in women (US$0.6b, 20% of overall losses in women) and lung cancer in men (US$1.2b, 24%). The absolute predicted change of annual losses between 2011-2015 and 2026-2030 was greatest for cervix uteri (+US$214m) in women and for lip, oral and pharyngeal cancers in men (+US$182m). Conclusions: In Russia, productivity losses due to premature cancer mortality are substantial. Given the expected importance especially for potentially preventable cancers, steps to implement effective evidence-based national cancer control policies are urgently required.


Assuntos
Efeitos Psicossociais da Doença , Eficiência , Mortalidade Prematura , Neoplasias/economia , Neoplasias/mortalidade , Feminino , Humanos , Expectativa de Vida , Masculino , Federação Russa/epidemiologia
20.
Eur J Public Health ; 29(2): 345-350, 2019 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-30265313

RESUMO

BACKGROUND: A comprehensive legal framework needs to be developed to run the health services and to regulate the information systems required to manage and to ensure the quality of cancer screening programmes. The aim of our study was to document and to compare the status of legal basis for cervical screening registration in European countries. METHODS: An electronic questionnaire including questions on governance, decision-making structures and legal framework was developed. The primary responses were collected by September 2016. RESULTS: We sent the questionnaire to representatives of 35 European countries (28 countries of the EU, with the United Kingdom included as 4 countries; 4 EFTA member countries: Iceland, Liechtenstein, Norway, and Switzerland); responses were collected from 33 countries. The legal framework makes it possible to personally invite individuals in 29 countries (88%). Systematic screening registration in an electronic registry is legally enshrined in 23 countries (70%). Individual linkage of records between screening and cancer registries is allowed in 19 of those countries. Linkage studies involving cancer and screening registries have been conducted in 15 countries. CONCLUSION: Although the majority of EU/EFTA countries have implemented population-based screening, only half of them have successfully performed record linkage studies, which are nevertheless a key recommendation for quality assurance of the entire screening process. The European legislation is open to the possibility of using health data for these purposes; however, member states themselves must recognize the public interest to create a legal basis, which would enable all the necessary functions for high-quality cancer screening programmes.


Assuntos
Confidencialidade/legislação & jurisprudência , Detecção Precoce de Câncer/métodos , Detecção Precoce de Câncer/normas , Sistema de Registros/normas , Neoplasias do Colo do Útero/diagnóstico , Europa (Continente) , Feminino , Humanos , Formulação de Políticas
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