Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a normal cardiomediastinal silhouette . A focal opacity over the right heart border , unchanged over time , likely represents focal scarring . A posterior round opacity seen on lateral view is not localized on frontal view . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Focal opacity seen posteriorly on lateral view is not localized on frontal view . CT chest would be necessary to exclude malignancy . These findings were entered onto the critical communications dashboard at ___ on ___ .