Atresia
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Atresia refers to a situation where there is underdevelopment of a structure with very rudimentary remnant tissues. This contrasts with agenesis, in which there is no development of the structure at all. The term atresia is often used with hollow structures such as a bronchus or intestine.
For example:
- respiratory tract
- alimentary tract
- bile ducts
- genitourinary tract
Some authors occasionally overlap the two terms (i.e atresia and agenesis).
-<li><a href="/articles/anal-atresia">jejunoileal atresia</a></li>-<li><a href="/articles/biliary-atresia">anal atresia</a></li>- +<li><a title="Jejunoileal atresia (JA)" href="/articles/jejunal-atresia">jejunoileal atresia</a></li>
- +<li><a title="Anal atresia" href="/articles/anal-atresia">anal atresia</a></li>
-<li>bile ducts<ul><li><a href="/articles/vaginal-atresia">biliary atresia</a></li></ul>- +<li>bile ducts<ul><li><a title="Biliary atresia" href="/articles/biliary-atresia">biliary atresia</a></li></ul>
-<a href="/articles/lower-vaginal-atresia">vaginal atresia</a><ul><li><a href="/articles/urethral-agenesis">lower vaginal atresia</a></li></ul>- +<a title="Vaginal atresia" href="/articles/vaginal-atresia">vaginal atresia</a><ul><li><a title="Lower vaginal atresia" href="/articles/lower-vaginal-atresia">lower vaginal atresia</a></li></ul>
-<li><a href="/articles/urethral-agenesis">urethral atresia</a></li>- +<li><a title="Urethral atresia" href="/articles/urethral-agenesis">urethral atresia</a></li>
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