Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral radiographs of the chest demonstrate low lung volumes . When compared to radiograph dated ___ , there has been little interval change . The cardiomediastinal and hilar contours remain unchanged , the heart moderately enlarged . Prominent vasculature and prominence of the hila is suggestive of pulmonary hypertension . Obscuration of the bilateral costophrenic angles is consistent with likely small bilateral pleural effusions versus atelectasis . No acute osseous abnormalities identified .
    OUTPUT:
    
Chronic moderate cardiomegaly and probably pulmonary hypertension , unchanged in appearance when compared to prior examination dated ___ . No overt pulmonary edema or pneumonia .