The Cancer Incidence Pattern in Isfahan Province: An Industrial Region in the Central Part of Iran.
This study reports age-standardized incidence rates of various cancers in Isfahan province, Iran, highlighting higher rates of leukemia, non-Hodgkin lymphoma, and bladder cancers compared to national data, with notable geographic heterogeneity and a high childhood cancer ASR, suggesting potential links to industrial pollution.
Background: We aimed to study age-standardized incidence rates (ASRs) of different cancer sites in Isfahan province, an industrialized city in the central part of Iran. Method: We obtained cancer incidence data from 2014 to 2018 in the Isfahan population-based cancer registry (PBCR). We studied quality indicators of PBCR and the validity of residential places for cancer patients. ASRs per 100,000 of common cancers were reported overall and at subprovincial levels. Results: Overall, 42,994 new cancer cases were registered in Isfahan PBCR in 2014-2018, and 51.4% were male. A high percentage of microscopic verification (MV%) (78.1%) and a low percentage of death certificate-only (DCO%) cases (7%) indicate the acceptable validity and completeness of this registry. The ASRs per 100,000 for all cancers combined were 173.7 in men and 171.1 in women. The most common cancers were prostate (ASR = 26.1), bladder (ASR = 19.9), and colorectum (ASR = 19.6) cancers in men and breast (ASR = 49.9), thyroid (ASR = 11.5), and colorectal (ASR = 15.6) cancers in women. Compared to the national reports in Iran, Isfahan province had a higher ASR of leukemia (13.6 in men and 8.9 in women), non-Hodgkin lymphoma (14 in men and 9 in women), and bladder (19.9 in men and 3.4 in women) cancer. The ASR of childhood cancers was 182.7. Notably, the most frequent cancer was leukemia (ASR = 73.4). We observed a wide geographic heterogeneity of cancer incidence in different counties for some cancers like breast, prostate, leukemia, and colorectal cancers. Conclusion: High incidence rates of hematological malignancies and bladder cancers in Isfahan province suggest further research to study the association between occupational and environmental exposures due to industrial pollution.
- Research Article
15
- 10.3906/sag-1510-145
- Jan 1, 2017
- TURKISH JOURNAL OF MEDICAL SCIENCES
This study analyzed the incidence, trends, and common types of cancer in the Turkish Republic of Northern Cyprus (TRNC). This study is based on data collected from the office of the North Cyprus Cancer Registry, Ministry of Health, for 2007-2012. Data were arranged on the basis of age group, sex, and cancer site. Age standardized incidence rates (ASRs) were estimated with the world standard population. EVIEWS (version 9) software was used for statistical analysis. Of 1395 registered cases, 52.33% (730) were reported in men and 47.67% (665) in women. The crude incidence rate was 96.41 in men and 101.74 in women. The average annual ASR was 88.88 in men and 87.76 in women with the cumulative rate of 21.47% and 14.69% in men and women, respectively. The most common cancers in men were skin (ASR 15.62), prostate (ASR 11.23), bladder (ASR 11.71), lung (ASR 8.01), and colorectal cancer (ASR 7.61), while in women these were breast (ASR 24.07), thyroid (ASR 14.93), skin (ASR 10.75), colorectal (ASR 6.05), and lymphoma (ASR 4.79). Linear regression analysis confirmed rising trends for both men's (10.79, P ≤ 0.03) and women's (14.67, P ≤ 0.04) cancers. Our findings revealed an increasing trend of cancer incidence in the TRNC. For control and prevention, public awareness of the risk factors and proper screening programs should be recommended.
- Research Article
21
- 10.1016/j.lansea.2023.100281
- Sep 21, 2023
- The Lancet Regional Health - Southeast Asia
Cancer awareness, diagnosis and treatment needs in Mizoram, India: evidence from 18 years trends (2003–2020)
- Research Article
33
- 10.1186/s12889-018-6119-9
- Nov 19, 2018
- BMC Public Health
BackgroundFew countries in the Middle East have a population-based cancer registry, despite a clear need for accurate cancer statistics in this region. We therefore established a registry in the East Azerbaijan province, the sixth largest province in northwestern Iran.MethodsWe actively collected data from 20 counties, 62 cities, and 44 districts for the period between 20th March 2015 and 19th March 2016 (one Iranian solar year). The CanReg5 software was then used to estimate age-standardized incidence rates (ASRs) per 100,000 for all cancers and different cancer types.ResultsData for 11,536 patients were identified, but we only analyzed data for 6655 cases after removing duplicates and non-residents. The ASR for all cancers, except non-melanoma skin cancer, was 167.1 per 100,000 males and 125.7 per 100,000 females. The most common cancers in men were stomach (ASR 29.7), colorectal (ASR 18.2), bladder (ASR 17.6), prostate (ASR 17.3), and lung (ASR 15.4) cancers; in women, they were breast (ASR 31.1), colorectal (ASR 13.7), stomach (13.3), thyroid (ASR 7.8), and esophageal (ASR 7.1) cancers. Both the death certificate rate (19.5%) and the microscopic verification rate (65%) indicated that the data for the cancer registry were of reasonable quality.ConclusionThe results of the East Azerbaijan Population-based Cancer Registry show a high incidence of cancer in this province, especially gastrointestinal cancers.
- Research Article
3
- 10.1002/cam4.70844
- Apr 1, 2025
- Cancer medicine
Establishing a population-based cancer registry is crucial for understanding cancer incidence, identifying risk factors, and developing effective cancer control programs. The Kabul Cancer Registry (KCR), Afghanistan's first population-based cancer registry, was established in 2018. The purpose of this study was to estimate the incidence of cancer in Kabul between 2018 and 2020. The KCR, adhering to International Agency for Research on Cancer (IARC) standards, actively collected data on new cancer cases from health facilities in Kabul between 2018 and 2020. We used CanReg5 software to calculate age-standardized incidence rates (ASIRs) by cancer site in males and females, using the direct method with Segi's World Standard Population. The KCR recorded 4498 new cancer cases among Kabul residents, with a male-to-female ratio of 0.82:1. The overall ASIR was 44.3 per 100,000 person-years in males and 60.9 in females. The top five cancer sites in males were stomach (ASIR = 9.1), esophagus (ASIR = 5.5), colorectum (ASIR = 3.7), lymphoma (ASIR = 2.4), and liver (ASIR = 2.1). In females, the top five cancer sites were breast (ASIR = 14.9), esophagus (ASIR = 6.7), stomach (ASIR = 4.2), colorectum (ASIR = 3.8), and gallbladder(ASIR = 1.8). Childhood cancers (aged 0-14 years) represented 6.8% of all cancers, with leukemia accounting for 43.5% of the new cancer cases. The high incidence of breast, stomach, and esophagus cancers highlights the need for policymakers and healthcare providers to develop cancer control programs focused on primary prevention, early detection, and quality diagnosis and treatment. Additionally, this study underscores the importance of cancer registries and emphasizes the need to strengthen the KCR to improve data quality.
- Research Article
- 10.1016/j.canep.2026.103048
- Jun 1, 2026
- Cancer epidemiology
Cancer incidence in Addis Ababa, 2018-2022: The only population based cancer registry in Ethiopia.
- Research Article
21
- 10.22034/apjcp.2018.19.6.1533
- Jan 1, 2018
- Asian Pacific Journal of Cancer Prevention : APJCP
Introduction:The epidemiology of common cancers in Kerman province, southeast of Iran, was assessed based upon results of the Kerman Population-Based Cancer Registry Program (KPBCR).Methods:in this retrospective study, all patients diagnosed with primary cancers and registered with the KPBCR were included. New cancer cases registered from 2014 were identified from pathological labs, medical reports of 48 health facilities providing cancer diagnosis or treatment services and the national death registry program. Data for patients who were referred to neighboring provinces to access health services were also collected from national referral registries. Results from autopsies was additionally extracted from regional forensic and legal medicine centers and added to the registry periodically. Age standardized incidence rates (ASRs) per 100,000 person-years for all cancers were computed, using direct-standardization and CanReg methodology. Mortality to incidence (M:I) ratios and microscopically verified (MV) proportions were calculated as quality measures.Results:A total of 2,838 cases of cancer were registered in Kerman province, 2014. Of these 45. 6% involved women (n=1,293). Individuals aged 60-64 years represented the largest proportion (11.6%) of the total cancer prevalence, followed by those aged 55-59 years (10.86%) and 65-69 years (8.99%). The ASRs for all cancers were 155.1 and 118.90 per 100,000, in men and women, respectively. In women, breast (ASR: 26.4), skin (ASR: 13.0), thyroid (ASR: 9.2), leukemia (ASR: 8.0) and colorectal (ASR: 7.70) were the most common cancers. In men, bladder (ASR: 24.70), skin (ASR: 16.80), lung (ASR: 14.6), leukemia (ASR: 14.50), and stomach (ASR: 10.8) were found to be the most frequent.Conclusion:This study provided latest evidence on epidemiology of cancer in the southeast of Iran that could be used to empower prevention and control interventions in a developing country.
- Research Article
76
- 10.1080/09603123.2011.628792
- Oct 24, 2011
- International Journal of Environmental Health Research
Cancer occurrence is associated with Arsenic (As) in drinking water. In Argentina, there are high As concentrations in groundwater but there is no published evidence yet of an association between geographic patterns of cancer incidence and the distribution of As in groundwater supplies. The purpose of this study is to assess the association between cancer incidence patterns and As in Córdoba province's aquifers. Age standardized incidence rates (ASIRs) were obtained from Córdoba Cancer Registry (CCR), and As data from official reports of monitoring wells. A multilevel model was applied. Total ASIRs by aquifers for males/females were 191.01/249.22 (Rioja plain); 215.03/225.37 (Pampa hills); and 239.42/188.93 (Chaco-Pampa plain). As was associated with increased risk of colon cancer in women, and lung and bladder cancers in both sexes. It had no association with breast cancer. ASIRs were related to As, controlling for unobserved heterogeneity. An overlapping pattern of higher As and higher risks was evident for lung, bladder and female colon cancers.
- Research Article
21
- 10.1186/s12885-018-4444-0
- May 8, 2018
- BMC Cancer
BackgroundStudies have shown that morbidity and mortality rates due to cancer among recent immigrants are lower than those among the native-born population. The objectives of this study were to describe the incidence of colorectal and breast cancer among immigrants from major regions of the world compared to Canadian-born residents of the province of Ontario and to examine the role of length of stay and neighborhood income.MethodsRetrospective cohort study including all individuals 18 years and over residing in Ontario from 2004 to 2014. Age-standardized incidence rates (ASIR) were calculated for immigrants from each world region versus Canadian-born residents and stratified by neighborhood income quintile and length of stay. Binomial regression analysis was used to determine the association of neighbourhood income, length of stay, and location of birth with colorectal and breast cancer incidence.ResultsCanadian immigrants born in South Asia had the lowest colorectal and breast cancer incidence (colorectal: women: ASIR = 0.14; men: ASIR = 0.18; breast: ASIR = 1.00) compared to long-term residents during the study period (colorectal: women: ASIR = .57; men: ASIR = .72; breast cancer ASIR = 1.61). In multivariate analyses, neighboorhood income did not consistently play a significant role in colorectal cancer incidence; however higher neighbourhood income was a risk factor for breast cancer among immigrant women (adjusted relative risk for highest neighboorhood income quintile versus lowest income quintile =1.21, 95% CI = 1.18–1.24). Increased length of stay was associated with higher risk of cancer. After adjusting for age, neighborhood income, and length of stay, those born in Europe and Central Asia had the highest risk of colorectal cancer compared to those born in East Asia and Pacific and those born in the Middle East had the greatest additional risk of breast cancer.ConclusionsAfter correcting for age, breast and colorectal cancer incidence rates among immigrants differ according to their region of birth and recent immigrants to Ontario have lower colorectal and breast cancer incidence rates than their native-born peers. However, those advantages diminish over time. These findings call for Ontario to generate tools and interventions to maintain the health of the immigrant population, particularly for those groups with a higher incidence of cancer.
- Research Article
62
- 10.1111/bju.13875
- May 8, 2017
- BJU International
To describe contemporary worldwide age-standardized incidence and mortality rates for bladder, kidney, prostate and testis cancer and their association with development. We obtained gender-specific, age-standardized incidence and mortality rates for 184 countries and 16 major world regions from the GLOBOCAN 2012 database. We compared the mortality-to-incidence ratios (MIRs) at national and regional levels in males and females, and assessed the association with socio-economic development using the 2014 United Nations Human Development Index (HDI). Age-standardized incidence rates were 2.9 (bladder) to 7.4 (testis) times higher for genitourinary malignancies in more developed countries compared with less developed countries. Age-standardized mortality rates were 1.5-2.2 times higher in more vs less developed countries for prostate, bladder and kidney cancer, with no variation in mortality rates observed in testis cancer. There was a strong inverse relationship between HDI and MIR in testis (regression coefficient 1.65, R2 = 0.78), prostate (regression coefficient -1.56, R2 = 0.85), kidney (regression coefficient -1.34, R2 = 0.74), and bladder cancer (regression coefficient -1.01, R2 = 0.80). While incidence and mortality rates for genitourinary cancers vary widely throughout the world, the MIR is highest in less developed countries for all four major genitourinary malignancies. Further research is needed to understand whether differences in comorbidities, exposures, time to diagnosis, access to healthcare, diagnostic techniques or treatment options explain the observed inequalities in genitourinary cancer outcomes.
- Research Article
8
- 10.1371/journal.pgph.0001112
- Oct 14, 2022
- PLOS global public health
Predicting the short-term evolution of the number of cancers is essential for planning investments and allocating health resources. The objective of this study was to predict the numbers of cancer cases and of the 12 most frequent cancer sites, and their age-standardized incidence rates, for the years 2019-2025 in Switzerland. Projections of the number of malignant cancer cases were obtained by combining data from two sources: forecasts of national age-standardized cancer incidence rates and population projections from the Swiss Federal Statistical Office. Age-standardized cancer incidence rates, approximating the individual cancer risk, were predicted by a low-order Autoregressive Integrated Moving Average (ARIMA) model. The contributions of changes in cancer risk (epidemiological component) and population aging and growth (demographic components) to the projected number of new cancer cases were each quantified. Between 2018 and 2025, age-standardized cancer incidence rates are predicted to stabilize for men and women at around 426 and 328/100,000, respectively (<1% change). These projected trends are expected for most cancer sites. The annual number of cancers is expected to increase from 45,676 to 52,552 (+15%), more so for men (+18%) than for women (+11%). These increases are almost entirely due to projected changes in population age structure (+12% for men and +6% for women) and population growth (+6% for both sexes). The rise in numbers of expected cancers for each site is forecast to range from 4.15% (thyroid in men) to 26% (bladder in men). While ranking of the three most frequent cancers will remain unchanged for men (1st prostate, 2nd lung, 3rd colon-rectum), colorectal cancer will overtake by 2025 lung cancer as the second most common female cancer in Switzerland, behind breast cancer. Effective and sustained prevention measures, as well as infrastructural interventions, are required to counter the increase in cancer cases and prevent any potential shortage of professionals in cancer care delivery.
- Supplementary Content
40
- 10.4111/kju.2015.56.6.422
- May 27, 2015
- Korean Journal of Urology
The incidence of cancer is sharply increasing. Cancer is a leading cause of death as well as a significant burden on society. The incidence of urological cancer has shown a higher than average increase and will become an important concern in the future. Therefore, an overall and accurate understanding of the incidence of urological cancer is essential. In this study, which was based on the Korea National Cancer Incidence Database, annual incident cases, age-standardized incidence rates, annual percentage change (APC), and distribution by age group were examined in kidney, bladder, and prostate cancers, respectively. From 1999 to 2011, the total number of each type of urological cancer was as follows: kidney cancer (32,600 cases, 25.5%), bladder cancer (37,950 cases, 29.7%), and prostate cancer (57,332 cases, 44.8%). The age-standardized incidence rates of prostate cancer showed a significant increase with an APC of 12.3% in males. Kidney cancer gradually increased with an APC of 6.0% for both sexes and became the second most frequent urological cancer after 2008. Bladder cancer showed no significant change with an APC of -0.2% for both sexes and has decreased slightly since 2007. The distribution of kidney cancer according to age showed two peaks in the 50- to 54-year-old and 65- to 69-year-old age groups. Bladder and prostate cancers occurred mostly in the 70- to 74-year-old age group. The proportions of male to female were 2.5:1 in kidney cancer and 5.6:1 in bladder cancer. We have summarized the incidence trends of kidney, bladder, and prostate cancers and have provided useful information for screening and management of these cancers in the future.
- Research Article
- 10.21037/cco-25-92
- Dec 1, 2025
- Chinese clinical oncology
Bladder cancer (BCa) and kidney cancer are increasingly significant public health concerns in China. However, comprehensive analyses of their long-term disease burden trends and future projections remain limited. This study analyzed trends in incidence, prevalence, mortality, and disability-adjusted life years (DALYs) for BCa and kidney cancer in China from 1990 to 2021 using Global Burden of Disease (GBD) data, and projected their future burden over the next two decades. GBD 2021 data were used to evaluate age-standardized incidence rate (ASIR), age-standardized prevalence rate (ASPR), age-standardized mortality rate (ASMR), and age-standardized disability-adjusted life years rate (ASDR). Trends were assessed using Joinpoint (v5.2.0) and R (v4.5.1) to calculate average annual percentage changes (AAPCs). Future burdens (2022-2041) were forecasted with an autoregressive integrated moving average (ARIMA) model. From 1990 to 2021, China experienced significant increases in BCa and kidney cancer incidence, prevalence, mortality, and DALYs. For BCa, ASIR and ASPR increased, while ASMR and ASDR decreased relative to 1990. Kidney cancer showed rising ASIR, ASPR, and ASMR, with ASDR slightly declining. AAPC analysis revealed BCa trends of ASIR (+0.12%), ASPR (+1.59%), ASMR (-1.60%), and ASDR (-1.74%); kidney cancer showed ASIR (+2.39%), ASPR (+3.47%), ASMR (+0.41%), and ASDR (-0.01%). Projections suggest BCa ASIR will keep rising in both sexes by 2041, while ASPR will decline, particularly in males. Kidney cancer ASIR is expected to rise in males but stabilize in females, with ASPR remaining steady. Between 1990 and 2021, China faced growing burdens of BCa and kidney cancer, with notable sex-specific patterns. Projections highlight the need for targeted, age- and sex-specific prevention and control strategies.
- Research Article
73
- 10.1054/bjoc.2001.1730
- May 1, 2001
- British Journal of Cancer
We describe the incidence of cancer in The Gambia over a 10-year period using data collected through the Gambian National Cancer Registry. Major problems involved with cancer registration in a developing country, specifically in Africa are discussed. The data accumulated show a low overall rate of cancer incidence compared to more developed parts of the world. The overall age standardized incidence rates (ASR) were 61.0 and 55.7 per 100 000 for males and females, respectively. In males, liver cancer was most frequent, comprising 58% of cases (ASR 35.7) followed by non-Hodgkin lymphoma, 5.4% (ASR 2.4), lung 4.0%, (ASR 2.8) and prostate 3.3% (ASR 2.5) cancers. The most frequent cancers in females were cervix uteri 34.0% (ASR 18.9), liver 19.4% (ASR 11.2), breast 9.2% (ASR 5.5) and ovary 3.2% (ASR 1.6). The data indicate that cancers of the liver and cervix are the most prevalent cancers, and are likely to be due to infectious agents. It is hoped that immunization of children under 1 year against hepatitis B will drastically reduce the incidence of liver cancer in The Gambia. © 2001 Cancer Research Campaign http://www.bjcancer.com
- Research Article
35
- 10.4143/crt.2016.139
- Sep 23, 2016
- Cancer Research and Treatment : Official Journal of Korean Cancer Association
PurposeThis descriptive study assessed the current trends in the incidence of urological cancers and patient survival in Korea.Materials and MethodsIn this nationwide retrospective observational study based on the data from the Korea National Cancer Incidence Database (KNCIDB), this study analyzed the age-standardized incidence rates (ASRs) and annual percentage changes (APCs) of kidney, bladder, prostate, testicular, and penile cancers as well as cancer of the renal pelvis and ureter between 1999 and 2012. The relative survival rates (RSRs) were calculated for urological cancer patients diagnosed between 1993 and 2012 from the KNCIDB data.ResultsProstate cancer was diagnosed in 66,812 individuals followed by bladder (41,549) and kidney (36,836) cancers. The overall ASR (18.26 per 100,000) increased with age because of the higher ASRs of bladder and prostate cancers in the elderly. The ASR for kidney cancer was highest in the 40-59-year-old group, whereas testicular cancer occurred most frequently before the age of 40. The incidence of most urological cancers increased (overall APC, 6.39%; p < 0.001), except for penile (APC, –2.01%; p=0.05) and bladder (APC, –0.40%; p=0.25) cancers. The overall survival increased steadily (5-year RSR, 66.4% in 1993-1995 vs. 84.2% in 2008-2012; p < 0.001), particularly for prostate (by 34.10%) and kidney (by 16.30%) cancers, but not for renal pelvis and ureter cancers (–7.20%).ConclusionThe most common urological cancer in Korea was prostate cancer followed by bladder and kidney cancers. The incidence of most urological cancers, except for penile and bladder cancers, increased. Survival also increased, particularly for prostate and kidney cancers.
- Research Article
20
- 10.1186/s12885-019-6008-3
- Aug 7, 2019
- BMC Cancer
BackgroundThe most recent results of Global Cancer Statistics indicated that gastrointestinal cancers, including gastric, colorectal, esophageal, and liver cancers, are among the most commonly diagnosed cancers worldwide. Previous reports from cancer registries in East Azerbaijan have shown that there is a high incidence of gastrointestinal cancer in this region, so we performed a trend analysis to determine the pattern of change over the last decade.MethodsIn total, 12 years of cancer registry data were collected from different sources in East Azerbaijan, and a data quality check was performed to ensure clean data. Using the 2000 World Health Organization standard population, we then generated age-standardized incidence rates (ASRs) for different cancers, and for each year from 1383 to 1394 of the Persian calendar (i.e., 19 March 2004 to 20 March 2015). Annual percent changes (APCs) and Average annual percent changes (AAPCs) in the ASRs for esophageal, gastric, small intestine, colorectal, anal, liver, gallbladder, and pancreatic cancers were calculated using Joinpoint Software (Version 4.5.0.1, June 2017).ResultsAn increase in most types of cancer was observed during the study period. The ASR for colorectal cancer increased from 2.9 to 13.6 per 100,000 women (APC, 9.7%) and from 2.2 to 17.8 per 100,000 men (APC, 10.2%). The ASR for gastric cancer showed a slight increasing trend from 10.5 to 13.5 per 100,000 women (APC, 1.3%) and from 3.1 to 29.9 per 100,000 men (APC, 3.2%). However, trend analysis showed a decreasing pattern for the ASR of esophageal cancer in both genders (APC,− 3%), with APCs of − 1.1% in females and − 0.4% in males.ConclusionsThe latest results of the East Azerbaijan Population-Based Cancer Registry indicate that gastrointestinal cancers remain common, with significant increasing trends in their ASRs. Improved screening and early detection are needed in this region.