Hydrocele :
The accumulation of fluid in a sac surrounding the testicles causing scrotal swelling is known as hydrocele. Hydrocele occurs in males of all ages although more common in newborns. It may result from an injury or scrotal inflammation, affecting the male adult. In a newborn typically, this hydrocele develops once the passage through which the testicles descend from the abdomen into the scrotum doesn't close after passing. In the case of an adult, it can be caused by trauma, epididymitis, and other conditions affecting the scrotum.
Hydrocele is typically characterized by the painful swelling of one or both sides of the scrotum. Although it does not cause any harm large hydroceles can prove uncomfortable or weigh heavily in the scrotum. Diagnosis usually happens through physical examination and ultrasound.
Many hydroceles resolve spontaneously in infants and need no treatment, although some persist for a year. In adults, hydroceles persist and are large in which case they may need surgical removal sometimes called hydrocelectomy. Patients usually recover very rapidly with no complications after surgery.