Many reasons: Blood in the fluid around the lungs (a pleural effusion) can be from many things such as inflammation, infections and cancer. Your physician will send the fluid for analysis to determine why the fluid was present.
Answered 11/24/2012
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Several causes: There are several causes for presence of blood in pleural fluid, cancer being one of them. The procedure itself can sometimes cause slight bleeding which can show up in the fluid. Your doctor will do additional testing (ct scans, biopsy, pleural fluid analysis for cancer cells etc.) depending on the clinical picture to confirm the diagnosis. Talk to you doctor about this.
Answered 11/24/2012
5.5k views
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