Rare diseases · Sign or symptom

Abnormality of the urachus

HP:0010478

What it means

Abnormality of the urachus.

The urachus is a vestigial embryonic structure, a canal that connects the urinary bladder of the fetus with the allantois (a structure involved in the development of the umbilical cord). During embryonic development, the lumen of the urachus is normally obliterated, transforming the urachus into a solid cord.

Part of the broader category

Abnormality of the urachus

Tracking symptoms like this for someone? Eleplan keeps symptoms, diagnoses, medications and every specialist in one plan.

Start free with Eleplan

This page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.