Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly low . The heart is top normal . Mediastinal contours are unremarkable . Consolidative opacity is noted within the left lung base concerning for pneumonia . Right lung is grossly clear . There is no pleural effusion or pneumothorax . No pulmonary vascular congestion is identified . No acute osseous abnormalities are present .
    OUTPUT:
    
Left basilar consolidative opacity concerning for pneumonia .