Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Again seen is a large right upper lobe mass with elevation the right hemidiaphragm . There are 3 large pulmonary nodules in the left lung , similar prior CT . New diffuse ground glass opacities are seen throughout both lungs , new from prior study . Heart size is unchanged . No pleural effusion . No pneumothorax . Small right pleural effusion .
    OUTPUT:
    
Known large right upper lung mass and 3 large left pulmonary nodules . New diffuse ground glass opacities in the right middle and lower lobes may represent post-obstructive pneumonia or metastatic progression .