A 22-year-old man presented with a 3-week history of coughing and breathlessness. He had lost 6 kg in weight. On examination, he was mildly pyrexial but had no anemia. His hemoglobin and white blood cell count were reported to be normal, but CRP was 233 mg/l.

The Mantoux test was significantly positive. The chest x-ray showed bilateral upper- and middle-lobe shadowing but no hilar enlargement. What is the probable diagnosis? Click here for the answer