Abstract
Established criteria to assist surgeons in deciding between a one- or two-stage operation for severe hypospadias are lacking. While anatomical features may preclude some surgical options, the decision to approach severe hypospadias in a one- or two-stage fashion is generally based on individual surgeon preference. This decision has been described as a dilemma as outcomes range widely and there is lack of evidence supporting the superiority of one approach over the other. The aim of this study is to determine whether the GMS hypospadias score may provide some guidance in choosing the surgical approach used for correction of severe hypospadias. GMS scores were preoperatively assigned to patients having primary surgery for hypospadias. Those patients having surgery for the most severe hypospadias were selected and formed the study cohort. The records of these patients were reviewed and pertinent data collected. Complications requiring further surgery were assessed and correlated with the GMS score and the surgical technique used for repair (one-stage vs. two-stage). Eighty-seven boys were identified with a GMS score (range 3-12) of 10 or higher. At a mean follow-up of 22 months the overall complication rate for the cohort after final planned surgery was 39%. For intended one-stage procedures (n=48) an acceptable result was achieved with one surgery for 28 patients (58%), with two surgeries for 14 (29%), and with three to five surgeries for six (13%). For intended two-stage procedures (n=39) an acceptable result was achieved with two surgeries for 26 patients (67%), three surgeries for eight (21%), and four surgeries for three (8%). Two other patients having two-stage surgery required seven surgeries to achieve an acceptable result. Complication rates are summarized in the Table. The complication rates for GMS 10 patients were similar (27% and 33%, p=0.28) for one- and two-stage repairs, respectively. GMS 11 patients having a one-stage repair had a significantly higher complication rate (69%) than those having a two-stage repair (29%) (p=0.04). GMS 12 patients had the highest complication rate with a one-stage repair (80%) compared with a complication rate of 37% when a two-stage repair was used (p = 0.12). Guidelines to help standardize the surgical approach to severe hypospadias are needed. Staged surgery for GMS 11 and 12 patients may result in a lower complication rate but may not reduce the number of surgeries required for an acceptable result. Although further study is needed, the GMS score may be helpful for establishing such criteria.
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