Table 1 Characteristics of patients with patent processus vaginalis
|  | Numbers of patients(N = 21) |
|---|---|
Age(years) | 4.31 ± 3.80 |
Sex  Male  Female | 11 10 |
Primary disease  Hydronephrosis  Duplex kidney  Ovarian teratoma  Renal dysplasia  Renal cyst  Vesicoureteral reflux | 13 3 2 1 1 1 |
Side of PPV  Left  Right  Bilaterally | 7 8 6 |
< 2years | 9 |
≥ 2years | 12 |
Metachronous inguinal hernia | 0 |