The modified pyramid hypospadias procedure: repair of megameatus and deep glanular groove variants.

Abstract

We present our experience with the pyramid hypospadias repair in 37 patients with distal or subcoronal hypospadias. We also describe a significant modification (in the 7 most recent patients) of Duckett's original procedure that minimizes the risk of ventral fistula formation. This modification involves the creation of a vascularized second-layer tissue flap. We incorporated the modified pyramid hypospadias repair into the general surgical approach to subcoronal hypospadias. Our operative approach permits the delayed selection of either a perimeatal-based flap, preputial flap or a modified pyramid type repair after release of the shaft skin. In 35 patients the repair achieved excellent results, while only 2 had urethrocutaneous fistulas. No patient who underwent the modified repair suffered fistula formation. Our surgical technique is applicable to a number of variants of subcoronal hypospadias and maximizes repair options.