Question

A 75-year-old woman presents with progressive shortness of breath. Chest X-ray reveals a large right-sided pleural effusion. Pleural fluid analysis shows: Pleural fluid protein 20 g/L, Serum protein 70 g/L. Pleural fluid LDH 100 U/L, Serum LDH 200 U/L. What is the most likely cause of the effusion?

Accepted Answer

Heart failure

Answer

Pulmonary embolism

Answer

Malignancy

Answer

Tuberculosis

Answer

Pneumonia (Parapneumonic effusion)

Practice question

A 75-year-old woman presents with progressive shortness of breath. Chest X-ray reveals a large right-sided pleural effusion. Pleural fluid analysis shows: Pleural fluid protein 20 g/L, Serum protein 70 g/L. Pleural fluid LDH 100 U/L, Serum LDH 200 U/L. What is the most likely cause of the effusion?