A 40-year-old man who was a smoker with no history of intravenous drug use presented to a tertiary hospital with a week-long high-grade fever, dry cough, and streaky hemoptysis. He had hypoxia at room air. Chest x-ray showed bilateral ground-glass opacities with relative sparing of apexes and left base (Figure 1).
Figure 1. Initial bilateral ground-glass opacities with relative sparing of apexes and left base.
Sputum and blood cultures (including fungal) and HIV tests were negative. He had received intravenous piperacillin and tazobactam empirically for a week, with fair clinical improvement and resolution of radiological shadows. He was referred to our tertiary …