What is a urachus?
A fibrous cord that connects the urinary bladder to the umbilicus (navel). The urachus is formed as the allantoic stalk during fetal development and lasts through life. Also called median umbilical ligament.
What is urachus a remnant of?
1. Introduction. The urachus is a midline tubular structure that stretches from the apex of the bladder and connects to the umbilicus. Also called the median umbilical ligament, the urachus is a vestigial remnant of two embryonic structures: the cloaca and the allantois [1.
Is the urachus the umbilical cord?
The channel of the urachus usually seals off and obliterates around the 12th week of gestation and all that is left is a small fibrous cord between the bladder and umbilicus called the median umbilical ligament.
Where is the urachus located?
The urachus is a canal that exists when the fetus is developing before birth. This canal runs from the bladder of the fetus to the belly button (umbilicus). It drains the urinary bladder of the fetus.
Do adults have a urachus?
In the normal adult the urachus measures from 3 to 10 cm. in length and reaches only one third the distance from the apex of the bladder to the umbilicus, being attached at the umbilicus only by fibrous cords from the obliterated umbilical arteries.
Is urachus normal?
The urachus is a ductal remnant that arises embryologically, originating from the involution of the allantois and cloaca and extending between the bladder dome and the umbilicus. During normal gestational development, the urachus involutes and its lumen is obliterated, becoming the median umbilical ligament (1).
How do I get rid of urachal remnant?
Most urachal cyst infections can be treated with medications you take by mouth (oral antibiotics). However, if the infection is severe, you may need to get antibiotics through a vein in your arm (intravenous). Sometimes, an infected urachal cyst needs to be removed surgically.