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Gastroenterology | SSM Health in Illinois

Gastroenterology Services

​​​​​​​Many people know that the gastrointestinal tract includes the esophagus, stomach, small intestine, colon and rectum, however gastroenterologists also specialize in the pancreas, gallbladder bile ducts and liver. Our team of gastroenterologists diagnose and treat a wide range of conditions and diseases that affect these important organs. From digesting food in the stomach to addressing the liver’s role in removing waste from the body, gastroenterologists help patients who have colon a variety of common conditions. 

Common Gastroenterology Conditions We Treat:

  • Cancer
    Gastroenterologists are important in the diagnosis of gastrointestinal cancers, including cancer of the colon, esophagus, pancreas, liver, rectum, stomach and anus. 
  • Colitis
    Common symptoms of colitis, which occurs when the inner lining of the colon is inflamed, include abdominal pain and diarrhea that may or may not contain blood. 
  • Chronic heartburn or GERD
    Gastroesophageal reflux disease is common in pregnant women and others who suffer from chronic heartburn. 
  • Gallbladder disease
    Gallbladder disease includes several conditions including gallstones, chronic cholecystitis and acute cholecystitis. These conditions can lead to the removal of the gallbladder.
  • Hepatitis
    There are three types of hepatitis - A, B and C - all of which affect the liver. Common symptoms include fatigue, muscle aches, nausea, vomiting, loss of appetite or pain in the abdomen.
  • Pancreatitis
    Symptoms of pancreatis include upper abdominal pain that radiates from the back and often aggravated by eating, a tender abdomen, swollen abdomen, nausea and vomiting.
  • Peptic ulcers
    A sort in the small part of your intestine, a peptic ulcer occurs when the acid used to digest food damages the wall of the stomach. Symptoms include stomach pain that occurs between meals or at night and comes and goes. 
  • Polyps
    Colonic polyps are abnormal tissue growths in the inner lining of the colon. They are common but rarely have symptoms. Blood in the stool can be a symptom.
  • Irritable bowel syndrome (IBS)
    IBS occurs in the large intestine of the colon. Symptoms include abdominal pain, bloating, constipation, cramping, gas or diarrhea. It is generally a chronic condition that a gastroenterologist can help manage. 

Meet Our Gastroenterologists

Stephen Ang, MD