title: The prenatal diagnosis of imperforate anus with rectourinary fistula: dilated fetal colon with enterolithiasis.
abstract: The finding of extraluminal calcifications is commonly reported and usually indicates intrauterine intestinal perforation with intraperitoneal extravasation of meconium, most often associated with intestinal obstruction and/or atresias. Intraluminal calcification of meconium is more rare and appears to result from the mixing of stagnant urine and meconium in utero. The presence of the intraluminal calcifications in a dilated loop of intestine, particularly with an associated urinary tract abnormality, should suggest a rectourinary fistula. Two cases of prenatally diagnosed imperforate anus with rectourinary fistulae are reported.
authors.affiliation: Division of Urology, Children's Hospital; Boston, MA 02115.
authors.forename: J
authors.initials: J
authors.lastname: Mandell
authors.forename: C W
authors.initials: CW
authors.lastname: Lillehei
authors.forename: M
authors.initials: M
authors.lastname: Greene
authors.forename: B R
authors.initials: BR
authors.lastname: Benacerraf
mesh_terms: D000328:Adult; D001006:Anus, Imperforate / Q000150:complications / Q000000981:diagnostic imaging*; D002114:Calcinosis / Q000000981:diagnostic imaging* / Q000209:etiology; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000000981:diagnostic imaging / Q000209:etiology; D007410:Intestinal Diseases / Q000000981:diagnostic imaging* / Q000209:etiology; D011247:Pregnancy; D012003:Rectal Fistula / Q000150:complications / Q000000981:diagnostic imaging*; D016216:Ultrasonography, Prenatal; D014522:Urethral Diseases / Q000150:complications / Q000000981:diagnostic imaging*; D014548:Urinary Fistula / Q000150:complications / Q000000981:diagnostic imaging*