Peter J. Kahrilas MD


Lower Esophageal Sphincter (LES)

The lower esophageal sphincter (LES) is a ring of muscle that forms a valve at the lower end of the esophagus where it joins the stomach. The LES stays closed except during swallowing, when it allows food to pass from the esophagus into the stomach. When the LES is closed, it prevents the backflow (reflux) of stomach…

Scleroderma

Scleroderma is a rare disease in which a person’s immune system begins to destroy normal, healthy tissues. (This is called an autoimmune disease.) As a result, connective tissue of the skin, lungs, and internal organs—especially the esophagus, kidneys, and digestive tract—is replaced with scar tissue. This change causes…

CREST Syndrome

CREST syndrome causes skin to harden and makes joints stiff and swollen. It is a type of limited scleroderma. Scleroderma is a disease that can seriously affect many parts of the body. CREST is a more limited form of scleroderma that doesn’t affect the skin as severely. Each letter in “CREST” stands for a medical term…

Scleroderma

Scleroderma is a rare disease in which a person’s immune system begins to destroy normal, healthy tissues. (This is called an autoimmune disease.) As a result, connective tissue of the skin, lungs, and internal organs—especially the esophagus, kidneys, and digestive tract—is replaced with scar tissue. This change causes…

CREST Syndrome

CREST syndrome causes skin to harden and makes joints stiff and swollen. It is a type of limited scleroderma. Scleroderma is a disease that can seriously affect many parts of the body. CREST is a more limited form of scleroderma that doesn’t affect the skin as severely. Each letter in “CREST” stands for a medical term…