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People who are infected with hepatitis B virus (HBV) or hepatitis C (HCV) virus may develop a chronic infection that can lead to

Infection with the hepatitis D virus (HDV), or delta agent, occurs only in people who are already infected with the hepatitis B

The carcinoembryonic antigen (CEA) test measures the amount of this protein that may appear in the blood of some people who have

Inflammatory bowel disease (IBD) increases the risk of colon cancer. The amount of increased risk depends on the type of

The following tips can help you prevent the spread of the hepatitis B virus (HBV). Tell the people you live with or have sex with

A tissue type test is a blood test that identifies substances called antigens on the surface of body cells and tissues. Checking

Surgery for Crohn's disease usually is needed if ongoing symptoms do not respond to medicine or if side effects of medicine cause

Total parenteral nutrition (TPN) is a way to provide nutrition without using the digestive tract. TPN is a liquid that contains

Chlamydia tests use a sample of body fluid or urine to see whether chlamydia bacteria (Chlamydia trachomatis) are present and

What is hepatitis B? Hepatitis B is a virus that infects the liver. Most people who get it have it for a short time and then get