Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . When compared with the prior CT , there is no significant change . A large fat containing diaphragmatic hernia on the left accounts for the left basal opacity seen on radiograph . The right lung is clear . Overall cardiomediastinal silhouette appears normal . Bony structures are intact .
    OUTPUT:
    
No acute findings . Large left fat containing diaphragmatic hernia accounts for opacity in the left lower hemithorax .