Atresia

Atresia

Atresia is a condition in which a body orifice or passage in the body is abnormally closed or absent.

Examples of atresia include:

* Anorectal atresia - malformation of the opening between the rectum and anus.
* Aural atresia (see Microtia) - a congenital deformity of the pinna (outer ear).
* Biliary atresia
* Choanal atresia - blockage of the back of the nasal passage, usually by abnormal bony or soft tissue.
* Esophageal atresia - affects the alimentary tract causing the esophagus to end before connecting normally to the stomach.
* Intestinal atresia - malformation of the intestine
* Ovarian follicle atresia, atresia refers to the degeneration and subsequent resorption of one or more immature ovarian follicles.
* Pulmonary atresia - malformation of the pulmonary valve in which the valve orifice fails to develop.
* Tricuspid atresia - a form of congenital heart disease whereby there is a complete absence of the tricuspid valve. Therefore, there is an absence of right atrioventricular connection.
* Vaginal atresia - congenital occlusion (blocking) of the vagina or subsequence adhesion (sticking together) of the walls of the vagina occluding it.
* Renal Atresia - congenital decreased size of the kidney leading absolute no functionality of the kidney .It is usually related to a single kidney.


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  • Atresia — Saltar a navegación, búsqueda Atresia es la falta de perforación ó la presencia de oclusión de un orificio o conducto normal del cuerpo humano. Podemos llamar atresia también al proceso de degeneración o muerte programada (apoptosis) propia de… …   Wikipedia Español

  • atresia — f. anat. patol. Oclusión congénita de una abertura natural del cuerpo. Medical Dictionary. 2011. atresia reducción del peso y …   Diccionario médico

  • atresia — occlusion of a natural passage in the body, 1807, from Mod.L. atresia, from Gk. atretos not perforated, from a , privative prefix, + tresis perforation, from PIE *tere to rub, turn, with derivatives referring to boring and drilling (see THROW (Cf …   Etymology dictionary

  • Atresia — A*tre si*a, n. [NL., fr. Gr. ? not perforated.] (Med.) Absence or closure of a natural passage or channel of the body; imperforation. [1913 Webster] …   The Collaborative International Dictionary of English

  • atresia — atresia. См. атрезия. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • atresia — s. f. [Anatomia] Oclusão das aberturas naturais (ducto ou orifício) do corpo …   Dicionário da Língua Portuguesa

  • atresia — (De a 2 y el gr. τρῆσις, agujero). f. Med. Imperforación u oclusión de un orificio o conducto normal del cuerpo humano …   Diccionario de la lengua española

  • atresia — [ə trē′zhə] n. an abnormality of the structure of a canal, duct, or body opening caused by a failure to develop properly or by an acquired closure, as with scar tissue …   English World dictionary

  • Atresia — Absence of a normal opening or failure of a structure to be tubular. Atresia can affect many structures in the body, including: {{}}Anal atresia congenital absence of a hole at the bottom end of the intestine. Also called imperforate anus. Aortic …   Medical dictionary

  • Atresia — (De a, privativo + gr. tresis, agujero < titraino, perforar.) ► sustantivo femenino MEDICINA Anormalidad consistente en el estrechamiento anómalo u obstrucción de un orificio o conducto del cuerpo humano. * * * atresia (de «a 1» y el gr.… …   Enciclopedia Universal

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