Definition

• Bloody Effusion: RBC count >100k
  • Note that if Hct is >50% of the serum Hct, then this is classified as a hemothorax instead (see [[Pleural Effusion-Hemothorax]])

Etiology

• Benign Asbestos Pleural Effusion (see [[Benign Asbestos Pleural Effusion]]0: can occur as early as 10 years after asbestos exposure
• Pleural Metastases (see [[Pleural Metastases]])
  • [[Mesothelioma]]
  • [[Lung Cancer]]
  • Pleural Metastases (see [[Pleural Effusion-Exudate]])
• Tuberculosis (see [[Tuberculosis]])
• SLE (see [[SLE]])
• Uremia (see [[Chronic Kidney Disease]])
• Acute PE (see [[Acute PE]])
• Coagulopathy
• Extramedullary Hematopoiesis (see [[Extramedullary Hematopoiesis]])
• Endometriosis (see [[Endometriosis]])
• Post-Cardiac Injury Syndrome (see [[Post-Cardiac Injury Syndrome]])
• Post-CABG Pleural Effusion (see [[Post-CABG Pleural Effusion]])