Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest provided . Lung volumes are somewhat low , though allowing for this there is no focal consolidation , effusion , pneumothorax . Heart and mediastinal contours appear normal and stable . Bony structures are intact . There is mild right AC joint arthropathy with hypertrophic changes .
    OUTPUT:
    
No acute intrathoracic process .