11 things to know about colorectal cancer
An expert explains what to know about colorectal cancer, from screenings, to diagnosis, treatment, and more.
Jan, 2026
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Slide 1
Colorectal cancer (also known as colon cancer) affects the colon (large intestine) and the rectum (last several inches of the large intestine). Receiving a diagnosis of colorectal cancer can be bring up a range of emotions. We asked Jill Onesti, MD, a surgical oncologist in Grand Rapids, Michigan, to explain colorectal cancer, from screening and diagnosis to treatment and recovery.
Written byPatrick Sullivan.
Medically reviewed byJoanne Perron, MD.
Sources: American Cancer Society. American Cancer Society Guideline for Colorectal Cancer Screening. Last Revised: January 29 + 5
- American Cancer Society. American Cancer Society Guideline for Colorectal Cancer Screening. Last Revised: January 29, 2024.
- American Cancer Society. Cancer Facts & Figures 2024.
- American Cancer Society. Key Statistics for Colorectal Cancer. Last Revised: January 29, 2024.
- American Cancer Society. Survival Rates for Colorectal Cancer. Last Revised: January 29, 2024.
- National Cancer Institute. Cancer Stat Facts: Colorectal Cancer. Accessed July 17, 2024.
- National Cancer Institute. Cancer Stat Facts: Common Cancer Sites. Accessed July 17, 2024.
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