Urachal umbilical sinuses

An umbilical-urachal sinus belongs to the spectrum of congenital urachal anomalies and represents a non-communicating dilatation of the urachus at the umbilical end.

Clinical presentation

Presentation is commoner in children and rare in adult.

Radiographic features

An umbilical-urachal sinus can manifest at ultrasound as a thickened tubular structure along the midline below the umbilicus.

Complications
  • infection, with possible abscess formation
  • concurrent occurrence of a tumor.

History and etymology

It is thought to have been first described by Cabriolus in 1550 .

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