Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The aorta is moderately tortuous . The pulmonary vasculature shows upper zone redistribution suggesting pulmonary venous hypertension , but no congestive heart failure . There is no pleural effusion or pneumothorax . Moderate anterior osteophyte formation and mild narrowings among several mid thoracic interspaces are noted .
    OUTPUT:
    
Findings suggesting pulmonary venous hypertension but no definite acute process .