Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The absence or closure of a normal body orifice or tubular passage such as the anus, intestine, or external ear canal.
- noun The degeneration and resorption of one or more ovarian follicles before a state of maturity has been reached.
from The Century Dictionary.
- noun The state or condition of being closed or imperforate; specifically, absence of a natural opening or passage: chiefly used in medicine and surgery.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Med.) Absence or closure of a natural passage or channel of the body; imperforation.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun pathology A condition in which a body
orifice or passage in the body is abnormally closed or absent.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun an abnormal condition in which a normal opening or tube in the body (as the urethra) is closed or absent
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
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Examples
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Tricuspid atresia is usually diagnosed a few hours or days after birth.
Tricuspid Atresia 2010
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Although biliary atresia is rare, its geographic reach is wide.
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In general the long-term outlook for biliary atresia is excellent.
Long-Term Outlook 2010
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Tricuspid atresia is a single-ventricle lesion, because the heart has only one functioning ventricle (the left ventricle).
Tricuspid Atresia 2010
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Now with the Kasai hepatoportoenterstomy and improvements in liver transplantation, the first generation of patients with biliary atresia is reaching adulthood.
Long-Term Outlook 2010
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The surgery for biliary atresia is called a Kasai operation or hepatoportoenterstomy.
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Biliary atresia is associated with several malformations including a malformation of the spleen, i.e. asplenia or polysplenia.
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The purpose of surgery for children with biliary atresia is to restore bile flow.
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Biliary atresia is a serious liver disorder that occurs shortly after birth when a newborn's bile ducts (the tubes that carry bile from the liver) become blocked.
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Tricuspid atresia is often associated with pulmonary stenosis or narrowing of the pulmonary valve, or pulmonary atresia where the pulmonary valve is completely closed.
Tricuspid Atresia 2010
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