| RVA | re-entrant ventricular arrhythmia; right ventricle activation; right vertebral artery |
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| RL | radial line; radiation laboratory; reduction level; renal dysplasia-limb defects [syndrome]; resisti... |
| RLL | right lobe of liver; right lower limb; right lower lobe |
| CHA | Common Hepatic Artery |
| LHA | Left Hepatic Artery |
| hepatic lymph nodes | Nodes located along the hepatic artery as far as the porta hepatis; they drain the liver, gallbladder, stomach, duodenum, and pancreas, and send efferents to the coeliac nodes. Synonym: nodi lymphatici hepatici. (05 Mar 2000) |
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| hepatic necrosis | A severe and rapidly progressive form of hepatitis accompanied by hepatocellular death and the signs and symptoms of hepatic failure. May be a complication of hepatitis B, C or D. (27 Sep 1997) |
| hepatic obstruction | <gastroenterology> A condition that results in liver enlargement and can occur either by blockage of the hepatic veins or by blockage of the common bile duct (drains bile from the liver). (27 Sep 1997) |
| hepatic plexus | An unpaired autonomic plexus lying on the hepatc artery and its branches in the liver. Synonym: plexus hepaticus. (05 Mar 2000) |
| hepatic porphyria | A category of porphyria that includes porphyria cutanea tarda, variegate porphyria, and coproporphyria. Synonym: porphyria hepatica. (05 Mar 2000) |
| hepatic portal system | A venous portal system in which the portal vein receives blood via its tributaries from the capillaries of most of the abdominal viscera and drains it into the hepatic sinusoids. (05 Mar 2000) |
| hepatic portal vein | <anatomy, vein> A large vein that carries blood from the stomach and intestines to the liver. (09 Oct 1997) |
| hepatic prominence | The conspicuous external bulge appearing dorsocaudal to the cardiac prominence on the body of the human embryo at about the fourth week, indicating the precocious development of the liver. (05 Mar 2000) |
| hepatic segments | Territories of the liver with independent portobilioarterial distribution or independent venous drainage. The naming of segments in the NA is based upon the portobilioarterial distribution. See: anterior segment, lateral segment, medial segment, posterior segment. Synonym: segmenta hepatis, segments of liver. (05 Mar 2000) |
| hepatic steatosis | <radiology> Hyperalimentation, diabetes, Cushing disease, steroids, obesity, previous jejunal bypass, Reye syndrome, kwashiorkor, malnutrition (EtOH, chemo, RT), Crohn disease (12 Dec 1998) |
| hepatic transplant | <surgery> Surgery to replace a disease liver with a healthy one from a donor. Over 1,000 are performed each year in the us. This procedure is technically quite difficult, since both vessels and biliary tract must be reattached to the new liver. most often indicated in those with long-term chronic hepatitis or congenital liver defects. Not usually performed in the situation of alcoholic cirrhosis or primary biliary cirrhosis. (27 Sep 1997) |
| hepatic triad | Branches of the portal vein, hepatic artery, and the biliary ducts bound together in the perivascular fibrous capsule or portal tract as they ramify within the substance of the liver. Synonym: hepatic triad, triad. (05 Mar 2000) |
| hepatic veins | Veins which drain the liver. (12 Dec 1998) |
| hepatic vein thrombosis | Occlusion of the hepatic veins caused by thrombi or fibrous obliteration of the veins. (12 Dec 1998) |
| hepatic veno-occlusive disease | Blockage of the small- or medium-sized hepatic veins due to nonthrombotic subendothelial oedema which may progress to fibrosis. (12 Dec 1998) |