What is a Hydrocele?
A hydrocele is a common condition in newborn boys, characterised by a lump in the scrotum caused by fluid collecting around the testicle. This fluid tracks down from the abdomen through a small opening in the abdominal wall muscles. In most cases, hydroceles are present at birth and resolve naturally within the first 1-2 years of life.
Hydroceles are related to the same opening that causes inguinal hernias, but unlike hernias, the opening is narrower, preventing the intestines from bulging through. Hydroceles are generally harmless and do not pose a danger to your child’s health.
Why Does a Hydrocele Occur?
Hydroceles occur due to a delay or failure of closure of the track through which the testicles descend into the scrotum during development. This opening allows fluid from the abdomen to enter the scrotum.
Hydroceles often become more noticeable during a viral illness, such as a cold or the flu. This is because increased fluid in the abdomen during illness can move down into the scrotum. However, this is not dangerous and will usually resolve once your child recovers from the illness.
Does a Hydrocele Need Surgery?
Most hydroceles resolve on their own by the time the child reaches 2-3 years of age. Surgery is generally not necessary unless the hydrocele persists beyond this age or begins to cause discomfort, pain, or other symptoms. If surgery is required, the repair process is similar to that of an inguinal hernia repair.
Is a Hydrocele Dangerous?
No, hydroceles are generally not dangerous. They usually resolve without treatment, and most children experience no pain or discomfort. If a hydrocele persists beyond 1-2 years of age, or if it causes symptoms, surgery may be recommended, but there is no urgent need for repair.
Symptoms of a Hydrocele in Children
The most common symptom of a hydrocele is swelling in the scrotum. It may appear as a painless lump that is usually soft to the touch. The size of the hydrocele can fluctuate, sometimes getting larger during the day and smaller at night, especially after physical activity or crying.
Key symptoms include:
- Painless swelling in the scrotum.
- The scrotum may appear larger on one side than the other.
- Swelling that may increase temporarily during illness or after activity.
If your child experiences pain, tenderness, or other unusual symptoms in the scrotum, it is important to seek medical advice, as these symptoms may indicate a different condition, such as an inguinal hernia.
How is Hydrocele Diagnosed?
Hydroceles are usually diagnosed through a physical examination. Your doctor may use a technique called transillumination, where a light is shone through the scrotum to determine if the swelling is caused by fluid. If the light passes through easily, it confirms the presence of a hydrocele.
There are different types of hydrocele. Most are within the scrotum, and some are within the groin (called encysted hydrocele of the cord). Girls can get hydroceles too, although much less common. They are called hydrocele of the canal of Nuck.
In some cases, an ultrasound may be recommended to rule out other conditions, such as an inguinal hernia or other scrotal abnormalities.
Treatment Options for Hydrocele in Children
In most cases, hydroceles resolve naturally by the age of 2-3 years without treatment. If your child’s hydrocele persists beyond this age, or if it becomes symptomatic, your doctor may recommend surgery.
Observe and Monitor
The most common approach is to monitor the hydrocele over time, especially in infants and young children, as it often resolves on its own.
Surgical Repair
If the hydrocele persists or becomes problematic, a simple surgical procedure, similar to inguinal hernia repair, can be performed to close the opening and remove the fluid. This procedure is usually done as a day surgery under general anaesthetic.
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