Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral images of the chest demonstrate low lung volumes bilaterally . Patient is rotated to her left . Allowing for this , the cardiomediastinal and hilar contours appear stable in appearance when compared to prior radiograph obtained one week prior on ___ . New since prior examination , there is obscuration of the left hemidiaphragm which may reflect atelectasis / positioning , although an early consolidation can not be excluded . Blunting of the posterior costophrenic angles may represent small effusions . There is no pneumothorax . No acute osseous abnormality is identified .
    OUTPUT:
    
New retrocardiac opacification and obscuration of the left hemidiaphragm . While this may reflect atelectasis , a focal consolidation and early infective process can not be excluded .