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. 2023 Oct;34(10):998-1005.
doi: 10.5152/tjg.2023.22666.

Geographical Distribution of Colorectal Cancer in Southwestern Iran Between Years 2011 and 2019

Changiz Rostami  1 , Arghavan Feyzmanesh  2 , Arezoo Karimi  3 , Salman Daliri  4
Affiliations

Geographical Distribution of Colorectal Cancer in Southwestern Iran Between Years 2011 and 2019

Changiz Rostami et al. Turk J Gastroenterol. 2023 Oct.

Abstract

Background/aims: Colorectal cancer is one of the most common cancers in the world. Various genetic, individual, and environmental factors are associated with this disease. Today, the role of environmental and geographical factors has been considered. Accordingly, the present study was conducted to determine the cumulative incidence and geographical distribution of colorectal cancer in Khuzestan province.

Materials and methods: This study was performed ecologically to determine the cumulative incidence of colorectal cancer and its geographical distribution in Khuzestan province between 2011 and 2019. The required information was extracted from the cancer registration program of the Ministry of Health and after refinement and replication.

Results: The cumulative incidence of colorectal cancer in Khuzestan province between 2011 and 2019 was estimated at 40.18 per 100 000 people. The highest cumulative incidence was related to Ahvaz city (95.87 per 100 000 people) and the lowest was related to DashtAzadegan city (25.35 per 100 000 people). The highest cumulative incidence of colorectal cancer, based on climate conditions, is in dry geographical areas (63.77 per 100 000 people), based on average annual rainfall, is in areas with an average rainfall of 100-200 mm (66.28 per 100 000 people), and based on land use, belonged to areas with agricultural use (74.57 per 100 000 people).

Conclusion: The cumulative incidence of colorectal cancer is relatively high in Khuzestan province. The cumulative incidence of the disease was higher in the central regions of the province than in other regions. Also, based on geographical areas, the cumulative incidence of the disease was higher in areas with arid climates, the average rainfall was 100-200 mm, and in areas with agricultural land use.

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Conflict of interest statement

Declaration of Interests: The authors have no conflict of interest to declare.

Figures

Figure 1.
Figure 1.
The cumulative incidence (per 100 000 people) of colorectal cancer in the cities of Khuzestan province by using GIS during the years from 2011 to 2019.
Figure 2.
Figure 2.
The cumulative incidence (per 100 000 people) of colorectal cancer based on climatic conditions in Khuzestan province by using GIS during the years from 2011 to 2019.
Figure 3.
Figure 3.
The relationship between the cumulative incidence of colorectal cancer and climatic conditions in Khuzestan province during the years from 2011 to 2019.
Figure 4.
Figure 4.
The cumulative incidence (per 100 000 people) of colorectal cancer based on average annual rainfall (mm) in Khuzestan province by using GIS during the years from 2011 to 2019.
Figure 5.
Figure 5.
The relationship between the cumulative incidence of colorectal cancer and average annual rainfall in Khuzestan province during the years from 2011 to 2019.
Figure 6.
Figure 6.
The cumulative incidence (per 100 000 people) of colorectal cancer based on land use in Khuzestan province by using GIS during the years from 2011 to 2019.
Figure 7.
Figure 7.
The cumulative incidence (per 100 000 people) of colorectal cancer based on vegetation in Khuzestan province by using GIS during the years from 2011 to 2019.
See this image and copyright information in PMC

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