Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lower lung volumes seen on the frontal view on the current exam . The right basilar opacity is noted . Cardiomediastinal silhouette is stable . No acute osseous abnormalities .
    OUTPUT:
    
No definite acute cardiopulmonary process . Right basilar opacity is potentially atelectasis due to lower lung volumes noting that infection is not excluded .