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Epidemiology and trends of gastrointestinal cancer in Iran (2004–2008)

1 Social Determinants of Health Research Center, Kashan University of Medical Sciences, Kashan, Iran
2 Trauma Research Center, Kashan University of Medical Sciences, Kashan, Iran
3 Abadan Faculty of Medical Sciences, Abadan, Iran

Correspondence Address:
Neda Amori,
Abadan Faculty of Medical Sciences, Abadan
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jcrt.JCRT_509_19

Aim: Gastrointestinal (GI) cancer is among the most common cancers in Iran. The main purpose of this study was to evaluate changes in the time trends of stomach, colon and rectum, and esophageal cancer during the past decade in Iran. Materials and Methods: In this cross-sectional study, the study population was all cases of GI cancers diagnosed in Iran between 2004 and 2008. Cancer incidence data for the years 2004–2008 were obtained from the cancer registry system of the Ministry of Health. All incidence rates were directly age standardized to the world standard population. Age-Satndardized incidence rate (ASR)per 105 persons was calculated using direct standardization and the world standard population. The crude rate was calculated in this study. Data were analyzed using SPSS (version 17) and Microsoft Office Excel 2007. Results: During the 2004–2008 period, the ASR and crude rates of GI cancers, including esophagus, stomach, colon and rectum, among males were 5.05, 15.02, and 8.29 and 4.01, 11.81, and 6.4, respectively, and among females were 6.52, 7.055, and 7.75 and 4.40, 4.85, and 5.49, respectively. The most common cancers in women were colon and rectum, and stomach cancer had the highest incidence in males. In this study, most cases of stomach cancer were adenocarcinoma adenocarcinoma (Nos) in both women and men. The most common type of colorectal cancer was adenocarcinoma, which was greater in men than women. The most common type of esophageal cancer was squamous cell carcinoma in both sexes. The north and northwestern regions of Iran have the highest risk of GI cancer. Conclusion: According to this study, a significant increase was observed in the incidence of cancers in the north and western regions of Iran. Hence, screening and early detection programs are highly recommended in these high-risk areas.

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