Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hypoinflated with crowding of vasculature . The right lung is clear . There is a new heterogeneous left lower lobe opacity . No pleural effusion or pneumothorax . Heart size and hila are unremarkable . There is stable prominence of the left mediastinal contour , which is consistent with mediastinal lipomatosis as seen on ___ CT chest . Limited assessment of the osseous structures demonstrates multiple bridging anterior osteophytes .
    OUTPUT:
    
Left lower lobe pneumonia .