High-Resolution Transperineal Ultrasound in Anorectal Malformations-Can We Replace the Distal Colostogram?

Area of Science:

• Pediatric Surgery
• Diagnostic Imaging
• Neonatal Care

Background:

• Anorectal malformations (ARM) are congenital defects affecting 1 in 5,000 newborns.
• Diagnosis and classification of ARM, especially without a visible fistula, traditionally require an augmented pressure distal colostogram.
• This colostogram involves radiation exposure after a diverting colostomy.

Observation:

• Four male newborns with ARM and imperforate anus underwent high-resolution transperineal ultrasound with 3D reconstruction.
• The ultrasound assessed the urethra, rectum, and potential fistulas prior to reconstructive surgery.
• Image acquisition was rapid and well-tolerated by the infants.

Findings:

• High-resolution transperineal ultrasound with 3D tomographic reconstruction demonstrated excellent correlation with conventional augmented pressure distal colostograms.
• The ultrasound accurately diagnosed the type of ARM in all four cases.

Implications:

• Transperineal ultrasound may replace distal colostograms in the preoperative assessment of ARM.
• This approach can significantly reduce or eliminate radiation exposure for neonates.
• It offers a faster, non-distressing diagnostic method for a common congenital anomaly.