Hydrocele

A hydrocele is a collection of serous fluid between the visceral and parietal layers of the tunica vaginalis, the double-layered sac surrounding the testis. Normally, this space contains only a small amount of lubricating fluid. A hydrocele develops when fluid enters or is produced faster than it can be reabsorbed. In a non-communicating hydrocele, the tunica vaginalis itself accumulates fluid. This is the common pattern in adults and may be idiopathic or occur after inflammation, trauma, torsion, surgery, or testicular disease. The scrotum gradually enlarges because the sac fills like a slow leak into a closed pouch. A communicating hydrocele has an open pathway—the patent processus vaginalis—between the abdomen and scrotum. Peritoneal fluid can move through this channel into the scrotal sac. The swelling may therefore change with position, activity, or increased abdominal pressure. In infants and children, this pattern must be distinguished from an inguinal hernia, because both may involve a patent processus vaginalis. A hydrocele is often benign, but the fluid can conceal the testis on examination. The nursing priority is not simply to identify a fluid-filled scrotum;...