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The area between the chest wall and lung is called the pleural space. The lining around this space produces small amounts of fluid. This fluid helps lubricate the lining and allows the lungs to expand smoothly. Pleural effusion occurs when too much fluid builds up in the pleural space.
Pleural effusion can occur if your child has a lung inflammation or bacterial infection. It can also happen if fluid builds up after a surgery. If not treated, pleural effusion can lead to serious breathing problems. That’s why your child needs treatment right away.
Pleural effusion may not cause symptoms. If symptoms occur, they can include:
Shortness of breath or rapid breathing
Sharp chest pain that worsens with coughing or deep breaths
Fever of 100.4°F or higher
Your child’s doctor listens with a stethoscope and taps on the chest. One or more of the following tests may be done to confirm the diagnosis:
X-rays in different positions to check whether fluid is free-flowing, which would indicate that infection is not present
Ultrasound or CT scan to view the amount and nature of fluid
Pleural fluid analysis, which involves inserting a needle into the pleural space to remove fluid and then sending it to a lab for testing
Treatment depends on how much fluid is present and whether or not it is infected.
If there is a small amount of fluid, it will likely go away on its own. Your doctor will have you watch your child at home. No hospital stay is needed.
If your child has a lot of fluid or pus, is having trouble breathing, or is uncomfortable, he or she may need to stay in the hospital. A chest tube will likely be placed to drain the fluid.
If an infection is present, antibiotics will be given to treat it.
The doctor will identify and treat any other underlying problem.
Often, the causes of pleural effusion in children are less serious than for adults. Your child should have no long-term effects once the underlying problem is treated. The doctor can tell you more about your child’s condition and what to expect.
In an infant under 3 months old, a rectal temperature of 100.4°F (38.0°C) or higher
In a child 3 to 36 months, a rectal temperature of 102°F (39.0°C) or higher
In a child of any age who has a temperature of 103°F (39.4°C) or higher
A fever that lasts more than 24-hours in a child under 2 years old, or for 3 days in a child 2 years or older
A seizure caused by the fever
Increasing trouble breathing or rapid breathing
Coughing up blood
Worsening or continued chest pain