Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: New heterogeneous opacities have developed in the right upper lobe , some of which have a slightly nodular configuration . Lungs are otherwise remarkable for linear atelectasis at the left lung base . Cardiomediastinal contours are within normal limits . Small pleural effusions are new , left greater than right . Bilateral shoulder prostheses are noted .
    OUTPUT:
    
1 . New heterogeneous right upper lobe opacities consistent with an evolving pneumonia . Poorly defined nodular opacities in this region may reflect coalescing acinar nodules from coalescing airspace disease , but atypical infection should also be considered given the history of immune suppression . Dr . ___ has been telephoned with this result at 4 : 15 p .m . on ___ at the time of discovery . 2 . Small bilateral pleural effusions .