Radiation therapy for small intestine cancer
Radiation therapy uses high-energy rays or particles to destroy cancer cells.
Radiation therapy is sometimes used to treat small intestine adenocarcinoma. Your healthcare team will use what they know about the cancer and about your health to plan the type and amount of radiation, and when and how it is given.
Radiation therapy is most often used to relieve pain or control the symptoms of advanced small intestine adenocarcinoma (called palliative therapy). It can be used to stop bleeding caused by the tumour and relieve pain and pressure on surrounding tissues. It can also be used to treat pain where the cancer has spread (metastasized), such as to the bones.
You may have radiation therapy to shrink a tumour before surgery. Radiation therapy and chemotherapy may be given together to treat small intestine adenocarcinoma. This is called
Radiation therapy is also sometimes used to destroy cancer cells left behind after surgery to reduce the risk that the cancer will come back (recur). This is called
External radiation therapy @(Model.HeadingTag)>
External radiation therapy is most commonly used to treat small intestine adenocarcinoma.
During external radiation therapy, a machine directs radiation through the skin to the tumour and some of the tissue around it. External radiation therapy is also called external beam radiation therapy.
Doctors may use the following types of external radiation therapy to accurately target the cancer and spare as much surrounding normal tissue as possible:
- 3D conformal radiation therapy (3D-CRT)
- intensity-modulated radiation therapy (IMRT)
- image-guided radiation therapy (IGRT)
Find out more about these types of external radiation therapy.
Side effects @(Model.HeadingTag)>
During radiation therapy, your healthcare team protects healthy cells in the treatment area as much as possible. Side effects of radiation therapy will depend mainly on the size of the area being treated, the specific area or organs being treated, the total dose of radiation and the treatment schedule. Tell your healthcare team if you have side effects that you think are from radiation therapy. The sooner you tell them of any problems, the sooner they can suggest ways to help you deal with them.
These are common side effects of radiation therapy for small intestine adenocarcinoma:
- blocked intestine (called a bowel obstruction)
- radiation enteritis
- skin problems
- nausea and vomiting
Find out more about radiation therapy @(Model.HeadingTag)>
Find out more about radiation therapy and side effects of radiation therapy. To make the decisions that are right for you, ask your healthcare team questions about radiation therapy.
Expert review and references
Shahid Ahmed , MD, FRCPC, PhD, FACP
Aparicio T, Zaanan A, Svrcek M, Laurent-Puig P, Carrere N, Manfredi S, Locher C, Afchain P . Small bowel adenocarcinoma: epidemiology, risk factors, diagnosis and treatment . Digestive and Liver Disease . 2014 .
Arber N, Moshkowitz M . Small intestinal cancers. Jankowiski J, Hawk E (eds.). Handbook of Gastrointestinal Cancer. Wiley-Blackwell; 2013: 4: 67-85.
National Cancer Institute. MedlinePlus Medical Encyclopedia: Short Bowel Syndrome. 2014: http://www.nlm.nih.gov/medlineplus/ency/article/000237.htm.
Macmillan Cancer Support. Bowel Problems After Pelvic Radiotherapy. Do not use; 2021: https://www.macmillan.org.uk/.
PDQ Adult Treatment Editorial Board. Small Intestine Cancer Treatment (PDQ®) – Patient Version . Bethesda, MD: National Cancer Institute; 2021: https://www.cancer.gov/.
PDQ Adult Treatment Editorial Board. Small Intestine Cancer Treatment (PDQ®) – Health Professional Version . Bethesda, MD: National Cancer Institute; 2022: https://www.cancer.gov/.
American Society of Clinical Oncology (ASCO) . Cancer.net: Small Bowel Cancer Types of Treatment . 2021 : https://www.cancer.net/.
American Cancer Society . Treating Small Intestine Cancer (Adenocarcinoma) . 2018 : https://www.cancer.org/.
Ansari P. Acute Abdominal Pain. Merck Manual Professional Version. Kenilworth, NJ: Merck & Co, Inc; 2021: https://www.merckmanuals.com/en-ca/professional.
Somasundar P. Medscape Reference: Malignant Neoplasms of the Small Intestine Treatment and Management. 2019: https://www.medscape.com/.