Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . The heart size is normal . The mediastinal and hilar contours likely are within normal limits . Patchy ill - defined opacity within the right lung base is concerning for an infectious process . There is no pulmonary edema . No definite pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Ill - defined patchy opacity in the right lung base is concerning for pneumonia . Please note that hemorrhage can not be excluded . CT of the chest with contrast should be considered for further evaluation .