Metachronous Contralateral Occurrence of Hydrocele After Unilateral Hydrocelectomy in Children Younger Than 8 Years.

Clinically evident risk of metachronous contralateral hydrocele after unilateral hydrocelectomy was 4.9%. Despite the relatively low incidence rate, the risk of metachronous contralateral occurrence should always be consulted with parents before surgical treatment of hydroceles.