In-depth

Carcinoid tumors

Carcinoid tumors are rare, slow-growing cancerous tumors that most often occur in the gastrointestinal tract or in the lungs.

Celiac disease

Celiac disease is an immune reaction to gluten, a protein found in certain foods. As a result, the body is unable to absorb some important nutrients.

Esophageal varices

Esophageal varices — enlarged veins in the esophagus — are a serious complication of liver diseases such as cirrhosis.

Sep. 27, 2012