Conditions
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An aortic aneurysm is a bulging, dilation, or ballooning in the wall of a blood vessel, usually an artery, that is due to weakness or degeneration that develops in a portion of the artery wall. Just like a balloon, the aneurysm enlarges, stretching the walls of the artery…
What is the official name of the MEN1 gene?
The official name of this gene is “multiple endocrine neoplasia I.”
MEN1 is the gene's official symbol. The MEN1 gene is also known by other names, listed below.
Read more about gene names and symbols on the About page.
What is…
Achalasia is a relatively rare disorder of the esophagus that makes it hard for foods and liquids to pass into the stomach.
The esophagus is the hollow, muscular tube that moves food and liquid from the throat to the stomach. The wall of the esophagus is made up…
Acute liver failure (ALF) (also called fulminant hepatic failure) is a rare condition characterized by the abrupt onset of severe liver injury, manifest as a profound liver dysfunction as well as a confusional state called hepatic encephalopathy in individuals with no prior…
Pancreatitis is inflammation of the pancreas. The pancreas is a large gland behind the stomach and close to the duodenum—the first part of the small intestine. The pancreas secretes digestive juices, or enzymes, into the duodenum through a tube called the pancreatic duct.…
What is Alagille syndrome?
Alagille syndrome is a genetic condition that results in various symptoms in different parts of the body, including the liver. A person with Alagille syndrome has fewer than the normal number of small bile ducts inside the liver. The liver is the…
The liver is one of the largest and most complex organs in the body. It stores vital energy and nutrients, manufactures proteins and enzymes necessary for good health, protects the body from disease, and breaks down (or metabolizes) and helps remove harmful toxins, like…
Ampullary cancer is a malignant tumor that arises from the Ampulla of Vater, the last centimeter of the common bile duct as it passes through the duodenum, the first section of the intestine. All pancreatic and biliary secretions enter the duodenum…
Anal fistulas are generally common among those who have had an anal abscess. Treatment is usually necessary to reduce the chances of infection in an anal fistula, as well to alleviate symptoms.
An anal fistula is defined as a small tunnel with an internal opening in the anal…
Anorectal Malformation, aka Imperforate Anus, is a spectrum of abnormalities of the rectum and anus. There are many possible abnormalities as follows:The absence of an anal opening.The anal opening in the wrong place.A connection, or fistula, joining the intestine and urinary…
The aorta is the body's largest artery. It runs from the heart, through the chest, and down into the abdomen. Aortic arch conditions are abnormalities in the structure of the arteries that branch off the top of the aorta. These abnormalities can reduce blood flow to vital…
In an aortic dissection, a weakened portion of inner wall of the aorta tears causes blood to flow between the layers of the aortic wall forcing the inner and middle layers apart. Aortic dissection is a medical emergency and can quickly lead to death should the blood-filled…
Appendicitis is inflammation or infection of the appendix, and if left untreated, can cause rupture (or perforation) of the appendix. The appendix is a small finger shaped pouch attached to the large intestine and…
An arrhythmia (ah-RITH-me-ah) is a problem with the rate or rhythm of the heartbeat. During an arrhythmia, the heart can beat too fast, too slow, or with an irregular rhythm.
A heartbeat that is too fast is called tachycardia (TAK-ih-KAR-de-ah). A heartbeat that is too slow is…
Atrial fibrillation (A-tre-al fi-bri-LA-shun), or AF, is the most common type of arrhythmia (ah-RITH-me-ah). An arrhythmia is a problem with the rate or rhythm of the heartbeat. During an arrhythmia, the heart can beat too fast, too slow, or with an irregular rhythm.
AF occurs…
Heart block occurs when the electrical impulses that make the heart beat do not transmit normally. Normally, these impulses travel from the heart's upper chambers, called the atria, to the lower chambers, called the ventricles, through the atrioventricular (AV) node. In heart…
What is autoimmune hepatitis?
Autoimmune hepatitis is a chronic—or long lasting—disease in which the body's immune system attacks the normal components, or cells, of the liver and causes inflammation and liver damage. The immune system normally protects people from infection…