Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are very low which limits the evaluation . Right perihilar opacity could represent crowding of normal bronchovascular structures or a focal consolidation . No pleural effusion or pneumothorax is identified . There is mild cardiomegaly . Cervical spine hardware is noted . The soft tissues and bones appear normal .
    OUTPUT:
    
Right lower lobe opacity could represent crowding of normal bronchovascular structures or less likely pneumonia . Mild cardiomegaly .