Overview of digestive tract birth defects

[Dave Paprocki]

The digestive organs may be incompletely developed or abnormally positioned, causing blockages, or the muscles or nerves of the digestive tract may be defective.
Symptoms depend on the location of the defect but may include crampy abdominal pain, abdominal swelling, and vomiting.
The diagnosis usually is based on imaging tests and other tests.
Surgery usually is required.

A birth defect can occur anywhere along the length of the digestive tract—in the esophagus, stomach, small intestine, large intestine, rectum, or anus. Such birth defects include the following:

Abdominal wall defects (including omphalocele and gastroschisis)
Anal atresia
Biliary atresia
Diaphragmatic hernia
Esophageal atresia and tracheoesophageal fistula
Hirschprung disease
Intestinal malrotation

Biliary atresia is a birth defect involving the bile ducts. Although the bile ducts are located outside the digestive tract, they help with digestion and are thus mentioned here.
In many cases, an organ is not fully developed or is abnormally positioned, which often causes narrowing or blockage (obstruction). Blockages can be present almost anywhere in the digestive tract, including in the esophagus, intestines, rectum, or anus. The internal or external muscles surrounding the abdominal cavity may weaken or develop holes, as is the case with abdominal wall defects and diaphragmatic hernia. The nerves to the intestines may also fail to develop (as is the case with Hirschsprung disease).