Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a subtle left lower lobe opacity obscured by the heart on the PA view . The lungs are otherwise clear . There is no pneumothorax or pleural effusion . The stable moderate cardiomegaly is exaggerated by pectus deformity . On lateral view , the presence of left atrial and left ventricular enlargement suggests the presence of mitral regurgitation . The aorta is stably tortuous and calcified . The pulmonary vascular markings are normal . The pacemaker with its RA and RV leads are in appropriate and unchanged position .
    OUTPUT:
    
1 . Early left lower lobe pneumonia . 2 . Marked cardiomegaly with evidence of left atrial and left ventricular enlargement suggesting mitral regurgitation 3 . No pulmonary edema . Findings were conveyed to Dr . ___ by Dr . ___ ___ telephone on ___ at 15 :45 .