The urachus, its anatomy and associated fasciae

Umbilical-Urachus Sinus A variant of Patent Urachus Presentation With Management in Adults- A single Center Experience

“…Urachal remnants are clinically silent because the urachus is surrounded by the umbilicovesical fascia, so disease processes usually remain contained inside the pyramid-shaped space [6] . In the umbilical-urachus sinus, the urachus obliterates at the bladder level but remains open at the umbilical site, causing a continuously draining sinus.…”

An unusual presentation of infected urachal cyst in an adult

“…The lumen of this canal progressively obliterates during fetal life, with eventual formation of a fibrous tract in early adult life [5]. Histologically, it is composed of three layers; an innermost layer of modified transitional epithelium similar to the urothelium, the middle layer of fibroconnective tissue and outermost layer of smooth muscle continuous with the detrusor [1,5]. Incomplete regression of the urachal lumen results in the following abnormalities:…”

“…The urachus is a fibromuscular tubular extension of the allantois that develops with the descent of the bladder to its pelvic position. They are more common in children than in adults, due to urachal obliteration in early infancy [1]. Remnants of the tract may present as a patent urachus, vesicourachal diverticulum, urachal sinus or urachal cyst [2].…”

Urachal Diverticulum presenting as abdominal pain: a surprise at surgery

“…They are more common in children than in adults, due to urachal obliteration in early infancy. 1 In adults, urachal cyst (UC) is the commonest variety, with infection being the usual mode of presentation.…”