Unilaterally impalpable testis
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Updated: Oct 17, 2026

Microsurgical Obstruction of Testes Fusion in Spodoptera litura
Published on: July 16, 2021
1Department of Paediatric Urology, Hospital for Sick Children, London, UK.
Abstract:
Thirty children presenting with a unilateral impalpable testis and a normally descended contralateral testis underwent surgical exploration. The testis was absent ('vanishing testis') in 12 cases (40%) and orchidectomy for a dysgenetic testis was performed in a further 5 cases. The overall rate of monorchism following surgery was therefore 56%. It is desirable that parents be advised of this possibility pre-operatively.
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