Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiograph demonstrate hypoinflated lungs with crowding of vasculature and left lower lobe atelectasis . Small right pleural effusion is noted . No left pleural effusion . Stable mild cardiomegaly . Mediastinal contour and hila are unremarkable . Limited assessment of the upper abdomen is within normal limits . Persistent H shaped vertebrae is consistent with known history of sickle cell disease .
    OUTPUT:
    
1 . Small right pleural effusion . 2 . No pneumonia .