title: Sonography of imperforate anus.
abstract: Real-time sonography provides a noninvasive method of determining the level of obstruction in patients with imperforate anus. The authors describe one technique for evaluating this anomaly which was employed in 6 neonates. A pouch-perineum distance of less than 1.5 cm is consistent with a low lesion, while a pouch that terminates above the base of the bladder is indicative of a high lesion.
mesh_terms: D001006:Anus, Imperforate / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000175:diagnosis; D007231:Infant, Newborn; D010502:Perineum; D011247:Pregnancy; D012007:Rectum; D014463:Ultrasonography; D001743:Urinary Bladder