Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mildly enlarged . The aorta is slightly unfolded . The mediastinal contours are otherwise unremarkable . There is mild pulmonary vascular congestion . A somewhat peripheral opacity projecting over the left lateral lung base may be due to overlying soft tissue . No pleural effusion or pneumothorax is present . Streaky opacities in the lung lower lungs likely reflect atelectasis . No pneumothorax is identified . There is minimal scarring within the lung apices . No acute osseous abnormalities are otherwise demonstrated .
    OUTPUT:
    
Mild pulmonary vascular congestion . Peripheral opacity within the left lung base may reflect overlying soft tissue ; comparison with prior radiographs may be helpful , or a short term follow up exam can be obtained for further evaluation .