Abstract
With the Nordic consensus statement advocating orchidopexy at an earlier age, the present study sought to investigate the outcomes of primary paediatric orchidopexy at a tertiary UK centre. To prospectively assess testicular atrophy following primary orchidopexy for undescended testes in a paediatric population. Secondary outcomes were complication rates and whether outcomes were dependent on grade of operating surgeon. Prospective data regarding age at operation, classification of the undescended testis, length of follow-up, and subjective comparison of intraoperative and postoperative testicular volumes compared with the contralateral testis were collected. Testicular atrophy was defined as >50% loss of testicular volume or a postoperative testicular volume <25% of the volume of the contralateral testis. Patients were excluded for incomplete data and follow-up <6 months. Data for 234 patients were analysed. Testicular atrophy occurred in 2.6% of cases. There was no reported testicular re-ascent. All secondary acquired cases underwent a previous ipsilateral hernia repair. There was no significant difference in outcomes comparing the grade of surgeon (consultant n=8, trainee/staff-grade surgeon n=7-8). There was a trend towards postoperative catch-up growth in approximately one fifth of cases. Previous studies have reported a testicular atrophy rate of 5%. The present study reported a similar rate of 2.6%. In agreement with a previous publication, it was also found that testicular atrophy was not dependent on the grade of operating surgeon. The mechanism for testicular catch-up growth is not well understood. Animal studies have supported the hypothesis that increased temperature has a detrimental effect on testicular volume. However, follow-up in the present cohort was short (median 6.9 months), making interpretation of this finding difficult. It is acknowledged that clinical palpation alone to determine testicular volume potentially introduces intra-observer and inter-observer error. However, prospective studies using ultrasound to determine testicular volumes following orchidopexy have reported catch-up growth. This study represented one of the larger collections of prospective assessments of outcomes following primary orchidopexy. It was acknowledged that subjectively assessing testicular volume is not ideal; however, the data correlated with similar studies.
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