Duodenal: Pertaining to the duodenum, part of the small intestine. As in duodenal ulcer or duodenal biliary drainage.
- Duodenal biliary drainage
A procedure used to diagnose gallstones when suspicion is high but other tests are negative. A thin tube is passed through a nostril down the throat, through the esophagus and stomach, into the duodenum. Once the tube is in place, a synthetic hormone related to cholecystokinin is injected IV. It causes the gallbladder to contract […]
- Duodenal ulcer
Duodenal ulcer: A crater (ulcer) in the lining of the beginning of the small intestine (duodenum). Ulcer formation is caused by infection with Helicobacter pylori. Other factors predisposing a person to ulcers include anti-inflammatory medications and cigarette smoking. Ulcer pain may not correlate with the presence or severity of ulceration. Diagnosis is made with barium […]
Duodenitis: Inflammation of the duodenum, the first part of the small intestine.
Duodenum: The first part of the small intestine. The duodenum is a common site for peptic ulcer formation.
Duplication: Part of a chromosome in duplicate, a particular kind of mutation (change) involving the production of one or more copies of any piece of DNA, including a gene or even an entire chromosome. Duplications typically arise from an event termed unequal crossing-over (a kind of recombination) that occurs between misaligned homologous chromosomes during meiosis […]