Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are moderately well inflated . Left lung is clear . Heterogeneous right lower lobe opacity is only seen on frontal projection . There is cardiomegaly . Visualized osseous structures are unremarkable . No displaced rib fractures identified . There is mild inferior subluxation of the distal end of the left clavicle relative to the acromion . Limited visualization of associated fractures on this single view .
    OUTPUT:
    
1 . Heterogeneous right lower lobe opacity may represent atelectasis or aspiration in the appropriate clinical setting . 2 . Although no fracture or other bone abnormality is seen , conventional chest radiographs are not appropriate for detection or characterization of chest cage lesions . Any focal findings should be clearly marked and imaged with either bone detail views or CT scanning . Within this limitation , there is minimal inferior subluxation of the distal end of the left clavicle relative to the adjacent acromion process . Associated fractures are not clearly visualized on this single view and if there is focal bony tenderness in this region additional imaging by cross-sectional exams such as a CT is recommended .