This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Medicine
[{'content': 'Pleural glucose is <60 mg/dl is seen in which of the following condition? \nSelect and explain. \nA. Malignancy, B. TB, C. Fungal, D. Pancreatitis', 'role': 'user'}, {'content': "Answer: B \nExplanation: Pleural TB is characterised by straw coloured pleural fluid;an exudate with a protein concentration>50% of that in serum,a normal to low glucose concentration(usually less than 60 mg/dL.),a pH of approx.7.3,and detectable WBCs(usually 500-6000/microL). Effusion secondary to malignancy is characterised by an exudate with reduced glucose level if the tumor burden is high enough.Pleural fluid secondary to pancreatitis shows elevated amylase levels. Referensce:Harrison's medicine-18th edition,page no:1346,2179.", 'role': 'assistant'}]