Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly is stable . Lungs are hypoventilated . Heterogeneous right infrahilar opacity could represent developing infection in the appropriate clinical setting . No pleural effusion or pneumothorax .
    OUTPUT:
    
Hypoinflated lungs with heterogeneous right infrahilar opacity which likely represents atelectasis , however pneumonia can not be excluded .