Do Different Populations of Rectal Cancer Exist?
The impact of new treatments for rectal cancer has substantially improved patients’ clinical outcomes in the last few years, but still worldwide colorectal cancer remains the third most common. In 2000, colorectal cancer was responsible for 7.9% of the world’s cancer deaths, with 492,000 deaths; it accounted for 9.4% of the world’s new cancers registered, with 945,000 cases diagnosed (Parkin Lancet Oncol 2(9):533–543, 2001; National Cancer Institute: PDQ® Rectal Cancer Treatment. National Cancer Institute, Bethesda (2011) http://cancer.gov/cancertopics/pdq/treatment/rectal/HealthProfessional).
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