| Bladder defects may be seen cystoscopically and the proximal part of a persistent urachus can be explored endoscopically. |
| The urachus is an embryological structure that rarely persists in adults, but may be a site of malignancy. |
| The urachus is a band of fibrous tissue extending from the apex of the bladder to the umbilicus. |
| He failed, however, to trace the connexion of the urachus with the bladder. |
| It surrounds the urachus and obliterated umbilical arteries. |
| In early fetal development, the ventral cloaca is connected to the allantois via the urachus. |
