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Tag Archives: Glossary.

Portal Hypertension: definition

High blood pressure in the portal vein. This vein carries blood into the liver. Portal hypertension is a common complication of cirrhosis and may cause esophageal varices and ascites.

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Phenotype: definition

The observable traits or characteristics of an organism, for example hair color, weight, or the presence or absence of a disease. Phenotypic traits are not necessarily genetic

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Pharynx: definition

The space behind the mouth that serves as a passage for food from the mouth to the esophagus and for air from the nose and mouth to the larynx, or voice box.

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Pernicious Anemia: definition

Anemia caused by a lack of vitamin B12. The body needs B12 to make red blood cells and nerve cells.

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Peritonitis: definition

An infection of the peritoneum.

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Peritoneum: definition

The lining of the abdominal cavity.

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Peristalsis: definition

A wavelike movement of muscles in the gastrointestinal (GI) tract. Peristalsis moves food and liquid through the GI tract.

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Perineum: definition

The area between the anus and the sex organs

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Perineal: definition

Related to the perineum.

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Perianal: definition

The area around the anus.

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Perforation: definition

A hole in the wall of an organ.

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Perforated Ulcer: definition

An ulcer that breaks through the wall of the stomach or the duodenum, causing stomach contents to leak into the abdominal cavity.

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Percutaneous: definition

The passage of an instrument through the skin to allow access to the organs.

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Peptide: definition

Two or more amino acids joined by a peptide bond.

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Peptic Ulcer: definition

A sore in the lining of the esophagus, stomach, or duodenum, usually caused by the bacterium Helicobacter pylori. An ulcer in the stomach is a gastric ulcer; an ulcer in the duodenum is a duodenal ulcer.

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