Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . When compared to prior , again seen is nodular opacity projecting over the left lower lung . The lungs are otherwise clear without consolidation , effusion or pulmonary vascular congestion . The cardiomediastinal silhouette is within normal limits . Hypertrophic changes seen in the spine and degenerative changes at the right shoulder .
    OUTPUT:
    
No acute cardiopulmonary process .