Cancer incidence in the East Azerbaijan province of Iran in 2015–2016: results of a population-based cancer registry

Somi, Mohammad Hossein; Sepahi, Sepideh; Belalzadeh, Mina; Sharbafi, Jabraeil; Abdollahi, Leila; Nahvijou, Azin; Nemati, Saeed; Zendehdel, Kazem

doi:10.1186/s12889-018-6119-9

Cited by 24 publications

(28 citation statements)

References 43 publications

(39 reference statements)

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“…Breast cancer is the most frequent cancer in women, and the second most common cancer across the globe [1]. Reports showed that breast cancer was the third most common cancer in the study region of Iran [14]. The highest occurrence has been reported from the United States and Western Europe, while the lowest rates belong to the East Asia [1,2].…”

Section: Discussionmentioning

confidence: 99%

Breast Cancer Survival and Incidence: 10 Years Cancer Registry Data in the Northwest, Iran

Dolatkhah

Jafarabadi

Hosseinalifam

et al. 2020

International Journal of Breast Cancer

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Background and Aim. Breast cancer is the most frequent cancer in women and the second most common cancer across the globe. The aim of this study was to report the survival data and trend analysis of breast cancer between 2007 and 2016 in a northwest region in Iran. Methods. Data were obtained from East Azerbaijan cancer registry database for the 10-year period between 2007 and 2016. Survival analysis was performed to calculate the breast cancer-specific survival proportions and mortality rates. Joinpoint trend analysis was performed to estimate the incidence trend of the cancer. Results. A total number of 4989 patients were recorded with primary diagnosis of breast cancer. Of them, we collected follow-up data for 1335 (1309 female and 26 male). The 10-year crude mortality rate was 3.34 (per 100,000). The one-, two-, three-, five-, and ten-year breast cancer-specific survival proportions were 0.92 (95% CI 0.91-0.93), 0.88 (95% CI 0.86-0.90), 0.84 (95% CI 0.83-0.86), 0.77 (95% CI 0.74-0.80), and 0.65 (95% CI 0.60-0.70), respectively. Over the study period, the age-standardized incidence rates increased from 21.68 to 36.99 (per 100,000) with an annual percentage change of 5.5 percent. Older individuals and males patients had significantly worse survival, and patients with high-grade tumors had significantly higher risk of mortality. Conclusion. A relatively better survival for breast cancer in East Azerbaijan, Iran, was observed compared to the overall breast cancer-specific survival proportions and mortality rates in the country. However, it is still poor compared to the developed countries indicating that inappropriate treatment modalities might have played a role on this.

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Section: Discussionmentioning

confidence: 99%

Breast Cancer Survival and Incidence: 10 Years Cancer Registry Data in the Northwest, Iran

Dolatkhah

Jafarabadi

Hosseinalifam

et al. 2020

International Journal of Breast Cancer

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“…Although it was originally based on pathology data, it has since been developed and improved to the point where we have established a standardized population-based cancer registry of data obtained from different sources. Cancers of the gastrointestinal tract are among the most common and important cancers in Northwestern Iran and East Azerbaijan [6]. Gastric cancer in particular continues to be the most common among men in this region [4, 6].…”

Section: Discussionmentioning

confidence: 99%

“…The population-based cancer registry program was completed in 2015 and we expect the results of this to be published soon. This registry sources data from pathology laboratories, hospital medical records, and cause of death registries, as well as radiotherapy, hematology, and imaging departments, to estimate the rates of different cancers in East Azerbaijan Province [6].…”

Section: Methodsmentioning

confidence: 99%

“…According to last National cancer registry reports of Iran, north and northwest areas of Iran had the highest incidence and mortality of GI cancers [5]. Located in the northwest of Iran, East Azerbaijan is the largest and most populated province, and has a high incidence of gastrointestinal tract cancers, including esophagus and stomach cancers [6, 7]. Higher prevalence of some well-known risk factors including H. pylori infection, smoking, opium use, higher usage of biomass and so exposure to polycyclic aromatic hydrocarbons (PAH), and dietary factors may explain higher incidence of GI cancers in North/Northwest of Iran [7].…”

Section: Introductionmentioning

confidence: 99%

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A 12-year trend analysis of the incidence of gastrointestinal cancers in East Azerbaijan: last updated results of an ongoing population-based cancer registry

et al. 2019

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Background The 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. Methods In 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). Results An 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. Conclusions The 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.

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“…Completeness of coverage was measured as the number of reported cases of cancer per year divided by the number of gastrointestinal tract cancers in Iran estimated by the WHO [17]. This demonstrated a 60-70% coverage of all cancer cases [18]. We identified 161 women who were diagnosed as having colorectal cancer.…”

Section: Populationmentioning

confidence: 99%

Folic Acid Supplement Intake and Risk of Colorectal Cancer in Women; A Case Control Study

Moazzen

Dastgiri

Dolatkhah

et al. 2020

Annals of Global Health

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Cancer incidence in the East Azerbaijan province of Iran in 2015–2016: results of a population-based cancer registry

Cited by 24 publications

References 43 publications

Breast Cancer Survival and Incidence: 10 Years Cancer Registry Data in the Northwest, Iran

Breast Cancer Survival and Incidence: 10 Years Cancer Registry Data in the Northwest, Iran

A 12-year trend analysis of the incidence of gastrointestinal cancers in East Azerbaijan: last updated results of an ongoing population-based cancer registry

Folic Acid Supplement Intake and Risk of Colorectal Cancer in Women; A Case Control Study

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