During embryogenesis, the<unk>  descends through the inguinal canal, drawing a diverticulum of peritoneum into the scrotum as it descends. This peritoneal tissue is known as the processus vaginalis. Normally, the communication between the processus vaginalis and the peritoneum is obliterated, and the tunica vaginalis is the tissue that remains overlying the<unk>  and the epididymis. Congenital<unk>  results when the processus vaginalis remains, allowing fluid from the peritoneum to accumulate in the scrotum.
Hydrocele testis
Spermatocele
Hematocele
Urethrocele
Cystocele
Testicular torsion
Inguinal hernia
Pneumatocele