Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes . Diffuse bilateral parenchymal opacities appear progressed from prior exam . Small to moderate bilateral pleural effusions are present . Heart is mildly enlarged . The hilar and mediastinal silhouettes are unremarkable . Aortic arch calcifications are noted . Metallic density projects over the trachea , compatible with a foreign body .
    OUTPUT:
    
Interval progression of diffuse patchy pulmonary opacities , compatible with multifocal pneumonia - can not exclude a component of pulmonary edema . Pleural effusions , small - moderate .