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imperforate anus

anal atresia, imperforate anus, anal imperforation

 

Etiology

-  anal stenosis
-  membranous atresia (covered anus)
-  anal agenesis with or without associated fistula
-  anorectal agenesis
-  malformative syndromes

Association (Fleming et al.)

-  communicating anomaly of anus or rectum (79%)
-  lower urinary tract malformations (15%)
-  upper urinary tract malformations (25%)
-  lower genital tract malformations (27%)
-  upper genital tract malformations (35%)
-  others (51%)



Anal imperforation (anal atresia) - In a VATER association

Rectovesical fistula with anal imperforation - A renal malformation is associated (obstructive solitary kidney with megauretere)

Anorecta atresia and rectovesical fistula (22 weeks) - A renal malformation is associated (obstructive solitary kidney with megauretere)

Anal imperforation - Association of anal imperforation with rectourethral fistula, hypospadias and radial agenesis

Anal imperforation - Association of anal imperforation with rectourethral fistula, hypospadias and radial agenesis (with legends)

Anal imperforation in caudal regression syndrome with spina bifida (21 weeks)

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