imperforate anus

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Related to imperforate anus: Hirschsprung disease


 [a´nus] (pl. a´nus)
the opening of the rectum on the body surface.
 The anus. Left, Endoanal magnetic resonance image of the sphincter muscles. High-definition images can be obtained by using an endoanal MRI coil. Right, Explanatory diagram (coronal view in a normal patient). From Aspinall and Taylor Robinson, 2001.
imperforate anus congenital absence of the normal opening of the rectum. Called also anal atresia and atresia ani.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

a·nal a·tre·si·a

, atresia ani
congenital absence of an anal opening due to the persistence of epithelial plug (persistence of the anal membrane) or to complete absence of the anal canal.
Farlex Partner Medical Dictionary © Farlex 2012

imperforate anus

Anal atresia, anorectal atresia GI surgery A congenital obstruction of the anal opening which affects 1:5000 children; in some Pts there may be communication between the GI tract and vagina and bladder Management Surgical anastomosis
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.


1. Out of place; said of an organ not in its proper position, or of a pregnancy occurring elsewhere than in the uterine cavity.
Synonym(s): aberrant (3) , heterotopic (1) , imperforate anus (2) .
2. cardiography Denoting a heartbeat that has its origin in some focus other than the sinuatrial node.

a·nal a·tre·si·a

, atresia ani (ā'năl ă-trē'zē-ă, ă-trē'zē-ă' ā'nī)
Congenital absence of an anal opening due to the presence of a membranous septum (persistence of the cloacal membrane) or a complete absence of the anal canal.
Synonym(s): imperforate anus (1) , proctatresia.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Imperforate anus

A congenital malformation (a birth defect) in which the rectum is a blind alley (a cul-de-sac) and there is no anus.
Mentioned in: Ostomy
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Posterior sagittal anorectoplasty for imperforate anus: a pre-liminary result.
Imperforate anus is a rare congenital anomaly usually associated with other defects which include vertebral, anal, cardiovascular, trachea-oesophageal, and limb anomalies (VACTERL).
Imperforate anus is a rare congenital defect where the anus has no opening.
(1) reported the rate of CHD incidence in diaphragmatic hernia, imperforate anus, omphalocele and EA/ TEF as 8%, 15.9%, 28.6%, and 23.7%, respectively.
(1-3) Other abnormalities include imperforate anus, renal agenesis or dysgenesis, internal genital organ agenesis except for the gonads, absent or hypoplastic renal arteries, oligohydramnios and presence of aberrant vasculature.
The fifth case (F508del/S1235R) also presented with a prenatally diagnosed DiGeorge syndrome (cardiac malformation) with an imperforate anus detected at birth (29 weeks).
These types of abnormalities are often referred to as "imperforate anus." Surgery is performed to create a new anus.
Up to 20% of these cases were fatal, and 25% of the children "suffered permanent disability because of neurological deficits." The device should not be used in infants weighing less than 1,800 grams at birth, those with evidence of head trauma or skull fracture that is causing major intracranial bleeding, or those with an imperforate anus.
Twenty-four hours after Sam was born at The Royal Glamorgan Hospital doctors told Marie and dad Mark, 38, who works at Everest Double Glazing in Treherbert, that he had a rare condition called imperforate anus.
Syndromal association of imperforate anus: The cat eye syndrome.