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Celiac Disease Health Center

Celiac Disease Complications

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If celiac disease is left untreated, complications ranging from iron deficiency to osteoporosis to cancer may develop. Some of these problems can occur because of the small intestine's inability to digest food and absorb nutrients properly. Other problems may develop from damage to the intestinal lining that may or may not cause noticeable symptoms.

In this article, we will cover the serious and rare complications of celiac disease -- cancers, small bowel ulcers (ulcerative jejunoileitis), and collagenous celiac disease.

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Cancer Linked to Celiac Disease

Adults with celiac disease have a several-fold higher than normal risk of developing lymphomas (cancers of the lymph glands) in the small intestine and elsewhere, especially in the first year after diagnosis. They also have a high risk of small intestinal and, to a lesser degree, of esophageal carcinomas (cancers of the inner lining of the intestine and esophagus).

 Lymphoma tends to develop in adult patients who have had celiac disease for longer than 20-30 years and in patients who don't respond to treatments for celiac disease. Symptoms -- if there are any -- of small intestinal lymphoma or carcinoma can include anemia, bleeding into the intestine, abdominal pain, weight loss, fever, and small intestinal obstruction (with symptoms of abdominal distension, vomiting, and cramping abdominal pain). Small intestinal lymphoma and carcinoma are difficult to diagnose. In patients with celiac disease, where the disease has been controlled with a gluten-free diet, recurrence of weight loss, anemia, abnormal pain, and symptoms of intestinal obstruction may lead health care providers to search for intestinal lymphoma and carcinoma.

Computerized tomography (CT) scans of the abdomen, enteroclysis (one type of barium X-ray of the small intestine), and enteroscopy (inspection of the small intestine using a long, flexible endoscope) are procedures doctors use to diagnose small intestinal lymphoma and carcinoma. Sometimes, diagnoses of intestinal lymphoma or carcinoma can only be made with surgery (open laparotomy) or by laparoscopy (an exam of the abdominal cavity with flexible endoscopes). The prognosis for patients who develop intestinal lymphoma usually is poor. Long-term survival (survival beyond five years) of patients with small intestinal lymphoma is estimated to be only 10%. Other cancers more likely to occur in people with celiac disease include cancers of the liver, oral cavity, and large intestine.

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