A 17 year old girl presents with a productive cough in a background of fever and fatigability for 9 weeks. She also experienced severe anorexia and lost 10 kg of weight during the same period. She lives with her extended family in a trailer park. There is no history of smoking, or drug abuse. A chest x-ray shows miliary mottling in both lung fields. A tuberculin test is performed and found to be negative.
The HRCT demonstrates nodules < 2mm in size randomly distributed along the the lung parenchyma. Bilateral diffuse reticulonodular shadowing is also seen.
Three samples are obtained. All are positive for acid-fast bacilli.
All indices are within normal parameters.