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Causes of nodes and pleural effusion

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THank you in advance for helping me. Please note, that I have not been diagnosed with heart or lung condition. This is the question: Several months ago I had a CT scan that showed that I had a 4 mm nonspecific nodular and a small right pleural effusion. I insisted that my doctor did more testing on me. She had me take another x-ray. This time they did x-ray not CT scan. They said the x-ray shows that the nodular and the right pleural effusion were gone. I have a hard time believing my doctor. I asked my doctor how could the nosular and pleural effusion just disappear? She said sometimes it happens. I asked her how do I know it won't be back again on the next x-ray? Of course due to insurance limitations I cannot have another x-ray to see if the 4mm nonspecific nodular and small right pleural effusion is back. I do not know why I had them and why they are no longer there. Will you please tell me what is going on?

Thank you very much for your help.


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replied May 4th, 2010
Lungs and Respiratory Disorders Answer A11702
Hi and welcome to the forum! I am glad that I can help you.

You want to know the cause of the node and pleural effusion that you experienced.

A nodular mass in the lungs may suggest several medical conditions such as tuberculosis, sarcoidosis, abscess, echinococcus cyst, tumor, etc. In diagnosis of tuberculosis three bacterial cultures from sputum should come back positive for tuberculosis. An abscess appears after lung infections such as bronchitis and pneumonia. Pleural effusion may appear as a result of inflammation of the pleura or when the pneumonia reaches the pleura and pus is released in the chest cavity. Transudate, which on an RTG may be also presented as a small collection of fluid in the basal areas of the chest cavity, may appear as a result of cardiac conditions such as chronic heart failure. Pleural effusions may contain pus (related to infections), blood (related to injuries of the blood vessels) or lymph as a result of injury of the thoracic duct. Any kind of collection of fluid in the thoracic or abdominal cavity should be examined with a previous thoracentesis.

Given the data that you described, you may or may not be experiencing any medical condition. Have an ultrasound exam of the thoracic cavity and if greater amounts of fluid are found, thoracentesis should be performed. You may also consider having the diagnostic test for tuberculosis to rule out this condition.

Please keep in mind that I provide medical information only. I am not able to diagnose medical conditions online. Please contact your doctor for further advice and information about diagnosis and treatment options for your current condition.


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