Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided demonstrate no definite signs of pneumonia or CHF . There is a bulge along the posterior aspect of the left hemidiaphragm which likely represents a Bochdalek hernia , as seen on prior CT abdomen . No large effusion is seen . Heart size and mediastinal contour normal . Bony structures appear intact .
    OUTPUT:
    
No acute findings .