Is a disease in which cancer (malignant) cells are found in the tissues of the small intestine.  The small intestine is a long tube that folds many times to fit inside the abdomen.

Causes:

• Eating a high-fat diet. 

• Having Crohn's disease. 

• Having celiac disease. 

• Having familial adenomatous polyposis 

Symptoms:

• crampy abdominal pain 
• blood mixed in the stools 
• dark/tarry/black stools (from digested blood) 
• weight loss 
• diarrhea 
• weakness or tiredness
• jaundice (yellow skin color)

Treatments:

• Surgical excision
• Radiotherapy
• Chemotherapy