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
orificeor 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
from The American Heritage® Dictionary of the English Language, 4th Edition
Tricuspid atresia is usually diagnosed a few hours or days after birth.
Although biliary atresia is rare, its geographic reach is wide.
In general the long-term outlook for biliary atresia is excellent.
Tricuspid atresia is a single-ventricle lesion, because the heart has only one functioning ventricle (the left ventricle).
Now with the Kasai hepatoportoenterstomy and improvements in liver transplantation, the first generation of patients with biliary atresia is reaching adulthood.
The surgery for biliary atresia is called a Kasai operation or hepatoportoenterstomy.
Biliary atresia is associated with several malformations including a malformation of the spleen, i.e. asplenia or polysplenia.
The purpose of surgery for children with biliary atresia is to restore bile flow.
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.
Tricuspid atresia is often associated with pulmonary stenosis or narrowing of the pulmonary valve, or pulmonary atresia where the pulmonary valve is completely closed.