Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Vague opacification is noted in the right middle lobe , likely representing pneumonia . Streaky opacifications are also noted in the left lower lobe . However , given the stable left hemidiaphragm elevation , these may represent atelectasis , though a multifocal infectious process can not be excluded . Mediastinal , hilar , and cardiac contours are unremarkable . No osseous abnormality identified .
    OUTPUT:
    
Right middle lobe opacification likely represents pneumonia . Streaky opacification in left lower lung likely represents atelectasis , though a multifocal infectious process can not be excluded .