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Helicobacter pylori (H. pylori) is a common bacteria. It is a cause of ulcers (sores). It weakens the mucus layer that coats the inside of the stomach and first part of the small intestine. Stomach acid can flow through the weakened layer and burn the tissue of the stomach wall.

If your child is having trouble swallowing food or liquids safely, the health care provider may suggest tube feeding. Tube feeding is often done with a nasogastric (NG) tube.

Read on to learn about giving your child liquid food through total parenteral nutrition (TPN).

A Meckel's diverticulum is a small pouch of tissue on the intestine (bowel). It forms when a baby is still growing in the uterus. Read on to learn more.

Intussusception occurs when a part of the bowel slides inside another part. The bowel can slide back out by itself. Or it can get stuck. Blood supply to part of the bowel could then become blocked. Read on for more details.

A look at the symptoms, diagnosis, and treatment of infantile hypertrophic pyloric stenosis.

Learn about hepatitis A virus in your child, including symptoms, diagnosis, treatment, and possible complications.

Learn how to take steps to protect your child and the rest of your family from the most common types of viral hepatitis.

The liver is in the upper right part of the belly. Most of it is protected by the ribs. The liver is a vital organ that has many jobs. This sheet details the function and anatomy of the liver.