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Concept
Radiation enteropathy
Résumé
Radiation enteropathy is a syndrome that may develop following abdominal or pelvic radiation therapy for cancer. Many affected people are cancer survivors who had treatment for cervical cancer or prostate cancer; it has also been termed pelvic radiation disease with radiation proctitis being one of the principal features.
People who have been treated with radiotherapy for pelvic and other abdominal cancers frequently develop gastrointestinal symptoms.
These include:
rectal bleeding
diarrhea and steatorrhea
other defecation disorders including fecal urgency and incontinence.
nutritional deficiencies and weight loss
abdominal pain and bloating
nausea, vomiting and fatigue
Gastrointestinal symptoms are often found together with those in other systems including genitourinary disorders and sexual dysfunction. The burden of symptoms substantially impairs the patients' quality of life.
Nausea, vomiting, fatigue, and diarrhea may happen early during the course of radiotherapy. Radiation enteropathy represents the longer-term, chronic effects that may be found after a latent period most commonly of 6 months to 3 years after the end of treatment. In some cases, it does not become a problem for 20–30 years after successful curative therapy.
Small intestinal bacterial overgrowth
Exocrine pancreatic insufficiency
Bile acid diarrhea
Urinary urgency
Sexual dysfunction
A large number of people receive abdominal and or pelvic radiotherapy as part of their cancer treatment with 60–80% experiencing gastrointestinal symptoms. This is used in standard therapeutic regimens for cervical cancer, prostate cancer, rectal cancer, anal cancer, lymphoma and other abdominal malignancies. Symptoms can be made worse by the effects of surgery, chemotherapy or other drugs given to treat the cancer. Improved methods of radiotherapy have reduced the exposure of non-involved tissues to radiation, concentrating the effects on the cancer. However, as the parts of the intestine such as the ileum and the rectum are immediately adjacent to the cancers, it is impossible to avoid some radiation effects.
Source officielle
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