urachal diverticulum

urachal diverticulum,

a usually asymptomatic type of vesical diverticulum resulting from a urachus that has closed at the umbilical end but not at the bladder end. It is seen most often in children, those with prune-belly syndrome, and persons with a bladder outlet obstruction.

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urachal

pertaining to urachus.

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urachal abscess

a mass palpable in the abdomen dorsal to the umbilicus to which it is usually connected by a fistula that drips pus continually.

urachal cyst

symptomless fluid-filled cavities in the urachal ligament.

urachal diverticulum

visible with contrast radiography as an extension of the bladder at the vertex. See also vesicourachal diverticulum.

urachal inflammation

usually results from an extensive infection of the umbilicus. The urachus may or may not be pervious. Cystitis or urachal abscess may follow.

persistent urachal ligament

maintains tension on the bladder leading to incomplete filling and emptying. The elongated bladder with a pointed vertex is readily visible radiologically.