Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient 's chin obscures the lung apices . There is perihilar opacity with indistinct pulmonary vascular markings . Blunting of the costophrenic angles could represent small effusions . Lucency projecting over the cardiac silhouette is compatible with large hiatal hernia . No acute osseous abnormalities .
    OUTPUT:
    
Mild to moderate pulmonary edema . Possible small pleural effusions . Large hiatal hernia .