A case in which a communicating hydrocele arose early after the initiation of peritoneal dialysis

A 55‒year‒old male with end‒stage renal disease due to IgA nephropathy was initially admitted to undergo peritoneal dialysis (PD) on December Y, 201X. On the 3rd day of hospitalization, a peritoneal catheter was inserted, and continuous ambulatory PD was started. On the 8th day of hospitalization, the patient experienced genital swelling after the peritoneal dialysate volume was increased. Careful examination revealed a left‒sided communicating hydrocele. After the suspension of the PD, an operation to repair an inguinal hernia was performed. PD was resumed 8 days after the operation without recurrence. Communicating hydroceles associated with PD have been reported in some cases. However, there are no definitive diagnostic criteria or treatments for such cases. It is necessary that further cases should be investigated.