IMPRESSION:
1.  Worsening opacification within the right lung base concerning for
 infection with a small to moderate sized right pleural effusion.
 2.  Persistent ill-defined nodular opacities with an upper lobe predominance,
 which may be slightly progressed when compared to the prior study.  As before,
 this can be further evaluated with a dedicated chest CT, as it may represent
 an infectious or inflammatory process.