Cancer Clusters in Chongqing, China


This retrospective study attempts to make sense all colorectal cancer cases in both Hong Kong and Chongqing, China. Because Chongqing, specifically, is a rapidly industrializing city, individuals have become skeptical if there is a possibility of cancer clusters in the area. This is logical when taking the Tom’s River, New Jersey scenario into account. 
This study essentially compiled all cases of colorectal cancer in three different hospitals (both located in Chongqing and Hong Kong) from 2003 to 2012 and aimed to search for statistical significance with these cancer reports. Chongqing had 2,320 cases of colorectal cancer within this time frame, which accounts for 61.3% of the cancer reports in the city, making it notably common. The study also found that there is a downward trend with age and colorectal cancer in Chongqing, but not in Hong Kong. This is fairly significant because colorectal cancer is said to be an age linked cancer. Furthermore, this cancer was more prevalent in men than in women which was universally applicable. 

Despite statistical significance, this study has great limitations. For instance, this study does not take extraneous variables such as alcohol intake and smoking into account. Colorectal cancer can be caused by a number of factors, and there was no mention of a specific environmental factor that may have caused this. Additionally, this is the first study published that compares colorectal cancers in Hong Kong and China. For these reasons, one can not conclude that there is a cancer cluster in Chongqing, China. However, these statistics are a good start to further research on the area’s cancer reports.

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  1. AnonymousSeptember 22, 2019 at 2:06 PM

    https://onlinelibrary.wiley.com/doi/full/10.1111/jgh.13018

    This retrospective study attempts to make sense all colorectal cancer cases in both Hong Kong and Chongqing, China. Because Chongqing, specifically, is a rapidly industrializing city, individuals have become skeptical if there is a possibility of cancer clusters in the area. This is logical when taking the Tom’s River, New Jersey scenario into account.

    This study essentially compiled all cases of colorectal cancer in three different hospitals (both located in Chongqing and Hong Kong) from 2003 to 2012 and aimed to search for statistical significance with these cancer reports. Chongqing had 2,320 cases of colorectal cancer within this time frame, which accounts for 61.3% of the cancer reports in the city, making it notably common. The study also found that there is a downward trend with age and colorectal cancer in Chongqing, but not in Hong Kong. This is fairly significant because colorectal cancer is said to be an age linked cancer. Furthermore, this cancer was more prevalent in men than in women which was universally applicable.

    Despite statistical significance, this study has great limitations. For instance, this study does not take extraneous variables such as alcohol intake and smoking into account. Colorectal cancer can be caused by a number of factors, and there was no mention of a specific environmental factor that may have caused this. Additionally, this is the first study published that compares colorectal cancers in Hong Kong and China. For these reasons, one can not conclude that there is a cancer cluster in Chongqing, China. However, these statistics are a good start to further research on the area’s cancer reports.

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