Bilateral pleural effusions can be common in general radiology practice. They may be symmetrical or asymmetrical. They can occur from several varied etiologies although congestive heart failure (CHF), renal or liver failure are generally considered common 1.
Recognized list of causes are many and include 2:
- prior or recent cardiothoracic surgery
- cardiovascular factors
- malignancy
- sepsis
- renal failure
- abdominal surgery or pathology
- pericarditis
- hemothorax / trauma
- hypoalbuminemia
- tuberculosis
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