This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Pseudochylous pleural effusion is most often seen in 
Select and explain. 
A. T.B., B. Lymphoma, C. Ca.lung, D. Filariasis
C: Ca.lung
Answer: C: Ca.lung 
Explanation: Most common cause of pseudochylous pleural effusion is tuberculous pleurisy.
• Chyliform pleural effusion, often called pseudochylous or cholesterol effusion, is a high-lipid effusion that is not chylous.
• The most common cause of this pleural reaction is tuberculous pleurisy, but it has also been described in association with rheumatoid arthritis.
• The presence of a fat-fluid level within the pleural space is unique to pseudochylous effusion.