Perineal ultrasound in infants with anteriorly displaced anus: A new decision-making tool for the surgeon?

Background: Anteriorly displaced anus (ADA) is defined as anterior displacement of the anus toward the perineum. Early radiologic characterization is a crucial step in guiding the first-line management.

Objective: The objective of this study was to assess the urethra-to-anus distance (UAD) on perineal ultrasound in female infants under the age of 3 months with anteriorly displaced anus and to retrospectively determine a cut-off to guide the indications for surgery.