Colon cancer survival rates vary throughout the world. Quality of care is one reason, but another is colon cancer screening programs. In general, the earlier colon cancer is detected, the easier it is to treat.
AustraliaAccording to a study published in the ANZ Journal of Surgery, five-year survival rates for colon cancer in Australia ranged from 59% to 93% depending on the stage at diagnosis. The ten-year survival rates ranged from 56% to 92%. The five-year (or ten-year) survival rate represents the percentage of patients alive five (or ten) years after their initial diagnosis. (Learn more about colon cancer survival rates in Australia.)
EuropeResearch published in the European Journal of Cancer found that the overall five-year survival rate for colon cancer in Europe was 43%. Broken down by site, the survival rate for tumors in the ascending colon (closest to the small intestine) was about 49%. In the transverse colon, the survival rate was about 42%, and in the descending colon, the survival rate was about 47%.
JapanThe National Cancer Center Hospital in Tokyo estimates that approximately 93% of people diagnosed with stage 1 colon cancer in Japan are alive five years after their diagnosis. The survival rates decrease with more advanced stages. The five-year survival rate for stage 2 is about 90%. For stage 3, it's about 72% and for stage 4, it's approximately 17%. For information about how colon cancer is staged and what the stages mean, please read Colon Cancer Stages.
United StatesThe American Cancer Society estimates that 93% of Americans diagnosed with stage 1 colon cancer are still alive five years after their diagnosis. The five-year survival rates for more advanced stages are as follows:
- Stage 2A: 85%
- Stage 2B: 72%
- Stage 3A: 83%
- Stage 3B: 64%
- Stage 3C: 44%
- Stage 4: 8%
- Cancer Statistics in Japan: Colon Cancer (1985-1996). National Cancer Center. 1 Dec. 2004. 19 Jul. 2006 [http://www.ncc.go.jp/en/statistics/1999/figures/f10-2.html].
- Gattaj, G. and Ciccolallo, L. "Differences in Colorectal Cancer Survival Between European and US Populations: The Importance of Sub-Site and Morphology." European Journal of Cancer 39.15 (Oct. 2003): 2214-2222. PubMed. 21 Jun. 2006 [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=14522381&dopt=Abstract].
- McLeish, John A. and Thursfield, Vicky J. "Survival from Colorectal Cancer in Victoria: 10-Year Follow Up of the 1987 Management Survey." ANZ Journal of Surgery 72.5 (2002): 352. Blackwell Synergy. 25 Jun. 2006.
- Overview: Colon and Rectum Cancer: How Is Colorectal Cancer Treated? American Cancer Society. 15 Mar. 2006. 19 Jul. 2006 [http://www.cancer.org/docroot/CRI/content/CRI_2_2_4X_How_Is_Colorectal_Cancer_Treated.asp?sitearea=].