A hydrocele occurs from an accumulation of fluid in the tunica vaginalis (a thin pouch that holds the testes within the scrotum).
In the fetus, the tunica vaginalis is formed in the abdomen and then moves into the scrotum with the testes. After the pouch is in the testes, it seals off from the abdomen. Hydroceles can be communicating or noncommunicating:
A hydrocele is present in as many as 10 percent of all full-term male live births; however, in most cases, it disappears without treatment within the first year.
The following are the most common symptoms of hydrocele. However, each child may experience symptoms differently. Symptoms may include the following:
A mass or swelling that is usually smooth and not tender. The swelling is generally painless and pain is a reason to contact your medical provider immediately.
A communicating hydrocele will fluctuate in size, getting smaller at night while lying flat, and increasing in size during more active periods.
If the hydrocele is large and tense, it may require more immediate attention.
The symptoms of a hydrocele may resemble other conditions or medical problems. Always consult your child's doctor for a diagnosis.
Diagnosis of a hydrocele is usually made by a physical examination and a complete medical history. Your child's doctor may need to determine if the mass is a hydrocele or an inguinal hernia (a weakened area in the lower abdominal wall or inguinal canal where intestines may protrude).
Transillumination (the passage of a strong light through a body structure to permit inspection on the opposite side) of the scrotum can differentiate a hernia from a hydrocele.
A noncommunicating hydrocele usually resolves spontaneously by the time the child reaches his first birthday. Resolution occurs as the fluid is reabsorbed from the pouch.
A hydrocele that persists longer than 12 to 18 months is usually a communicating hydrocele. A communicating hydrocele usually requires surgical repair to prevent an inguinal hernia from occurring. The surgery involves making a small incision in the groin or inguinal area and then draining the fluid and closing off the opening to the tunica vaginalis.
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