Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is rotated somewhat to the left . There is moderate pulmonary edema . No large pleural effusion is seen . There is no evidence of pneumothorax . The aortic knob is calcified . The cardiac silhouette is top - normal to mildly enlarged . There maybe prominence of the main pulmonary artery in part related to patient rotation but there may be a component of underlying pulmonary arterial hypertension .
    OUTPUT:
    
Moderate pulmonary edema . Possible dilated main pulmonary artery .