Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is moderate interstitial pulmonary edema ; concurrent pneumonia , particularly in the right lower lobe , is not excluded . The heart is moderately enlarged , increased in size compared to the prior radiograph from ___ . A 1 .8 x 1 .4 cm nodular opacity projecting over the left retrocardiac region just medial to two surgical clips could be a pulmonary nodule or pleural calcification . A curvilinear radiodense structure paralleling the right hemidiaphragm may also be pleural calcification . There are no definite pleural effusions . No pneumothorax is seen . The mediastinal contours are normal .
    OUTPUT:
    
1 . Moderate pulmonary edema . Concurrent pneumonia is not excluded . 2 . ___- mm nodular opacity projecting over the left retrocardiac region could be a pulmonary nodule or pleural calcification . Curvilinear radiodensity projecting over the right hemidiaphragm may also be pleural calcification . 3 . Moderate cardiomegaly , increased compared to the prior study from ___ .