Anal atresia: A prenatal ultrasound diagnosis

Anorectal atresia: prenatal sonographic diagnosis

“…4). Also, the case described by Bean et al [9] showed normal findings at 24 weeks but dilated bowel at 34 weeks. Pathologically, mild colon dilatation was found as early as 24 weeks but was not seen in any of four cases examined before 22 weeks.…”

“…Prenatal detection of ARA has been reported infrequently. Two previously published case reports suggest that dilated fetal bowel seen on prenatal sonography may result from ARA as well as from other causes of bowel obstruction [9,10] 1 and 2). In four of these cases, the abnormality was prospectively recognized at the time of the initial sonogram;…”

Maternal serum alpha-fetoprotein in fetal anal atresia and other gastro-intestinal obstructions

“…Bowel dilatation, intra-luminal meconium calcification and the absence of peristalsis are typical signs (Bean et al, 1978;Guzman et al, 1995;Harris et al, 1987;Hearn-Stebbins et al, 1991). Low MSAFP levels in association with AA have not been reported previously.…”

Fetal Anal Atresia Presenting as Transient Bowel Dilatation at 16 Weeks of Gestation

“…Bean et al [10] described a sonolucent mass with a septal division in a fetus with imperforate anus during the third trimester of pregnancy. This mass was not vis- ible in a previous ultrasound scan performed at the second trimester.…”