Pyourachus in spina bifida: case report and review.

Failure of the urachus to close results in a multitude of clinical anomalies. Such anomalies have been documented as occurring in association with mechanical bladder outlet obstruction. However, no urachal anomalies have been linked specifically to spina bifida. Two cases of urachal abscesses were identified in adolescent male patients with spina bifida at our institution, both with neuropathic bladders and using self-catheterization. The clinical presentations differed, with classic involvement of the umbilicus in 1 case. Because of its varied presentations, the diagnosis of a urachal anomaly is potentially difficult. Urachal anomalies should be considered in the evaluation of pelvic masses in this demographic.