Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Suboptimal inflation likely accounts for equivocal increased density in the right lower lung on the frontal view , with no clear evidence of pneumonia . There is no pleural effusion , pulmonary edema , or pneumothorax . The cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
No acute cardiopulmonary abnormality .