Disease, Osler-Rendu-Weber
Known as hereditary hemorrhagic telangectasia (HHT), this is a genetic vascular disease with dilatation (widening) of capillaries and small arteries (arterioles) producing characteristic small red spots (called telangectases) in the skin and mucous membranes, particularly in the nose and gastrointestinal tract. These spots are fragile and bleed easily. Recurrent nosebleeds and chronic gastrointestinal bleeding are the usual major problems. Other organs may have the spots and bleed. HHT is an autosomal dominant disorder, meaning that the HHT gene is on a nonsex (autosomal) chromosome (in chromosome 9q34.1) and one copy of this gene is enough to cause the disease. HHT is also known as Rendu-Osler-Weber disease or syndrome.

Medical dictionary. 2011.

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  • Osler-Rendu-Weber disease — ▪ medical disorder also called  hereditary hemorrhagic telangiectasia        hereditary disorder characterized by bleeding from local capillary malformations. In Osler Rendu Weber disease, capillaries in the fingertips and around the oral and… …   Universalium

  • Osler-Rendu-Weber syndrome — Known as hereditary hemorrhagic telangectasia (HHT), this is a genetic vascular disease with dilatation (widening) of capillaries and small arteries (arterioles) producing characteristic small red spots (called telangectases) in the skin and… …   Medical dictionary

  • Osler-Rendu-Weber disease — hereditary haemorrhagic telangiectasia a hereditary (autosomal dominant) disorder characterized by thinning of the blood vessel walls, resulting in abnormally wide and fragile blood vessels. Patients may develop telangiectasia, nosebleeds, and… …   The new mediacal dictionary

  • Syndrome, Osler-Rendu-Weber — Known as hereditary hemorrhagic telangectasia (HHT), this is a genetic vascular disease with dilatation (widening) of capillaries and small arteries (arterioles) producing characteristic small red spots (called telangectases) in the skin and… …   Medical dictionary

  • Osler, Sir William, Baronet — ▪ Canadian physician born July 12, 1849, Bond Head, Canada West [now Ontario], Can. died Dec. 29, 1919, Oxford, Eng.  Canadian physician and professor of medicine who practiced and taught in Canada, the United States, and Great Britain and whose… …   Universalium

  • Rendu-Osler-Weber disease — Ren·du Os·ler Web·er disease .rän .d(y)ü äs lər web ər n HEREDITARY HEMORRHAGIC TELANGIECTASIA Ren·du rän due Henry Jules Louis Marie (1844 1902) French physician. Rendu was the leading French clinician of his day. His major writings include… …   Medical dictionary

  • Disease, Rendu-Osler-Weber — Known as hereditary hemorrhagic telangectasia (HHT), this is a genetic vascular disease with dilatation (widening) of capillaries and small arteries (arterioles) producing characteristic small red spots (called telangectases) in the skin and… …   Medical dictionary

  • Osler-Weber-Rendu disease — Os·ler We·ber Ren·du disease (ōsґlər vaґbər ron duґ) [Sir W. Osler; Frederick Parkes Weber, British physician, 1863–1962; Henri Jules Louis Marie Rendu, French physician, 1844–1902] hereditary hemorrhagic telangiectasia …   Medical dictionary

  • Weber — Rainer, 20th century U.S. pathologist. See W. stain. Ernst Heinrich, German physiologist and anatomist, 1795–1878. See W. glands, under gland, W. law, W. paradox, W. test for hearing, Fechner W. law, W. Fechner law. Frederick Parkes, English… …   Medical dictionary

  • Osler's maneuver — Os·ler s maneuver or Os·ler maneuver äs lər(z) , ōs n a sphygmomanometric procedure of disputed usefulness in detecting false cases of hypertension in the elderly that involves inflating the cuff above the systolic blood pressure and that is held …   Medical dictionary

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