The left upper lobe shows patchy ground-glass opacities with numerous tiny and randomly distributed pulmonary nodules. Scattered tree in bud opacities and mild bronchiectatic changes also noticed. There is a small cavitary lesion with an avidly enhancing solid component seen in the post-contrast study indicating a tuberculous cavity and a related aneurysm of the subsegmental pulmonary artery (Rasmussen aneurysm).