Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior radiograph , there is cephalization of pulmonary vasculature consistent with mild pulmonary edema . The cardiomediastinal silhouette is unchanged . Left hilar opacity corresponds to the markedly dilated left main pulmonary artery seen on CTA from ___ . Nodular opacity at the right base most likely corresponds to pleural - based nodules seen within the minor fissure , reported to have been stable since ___ . There is a small left pleural effusion . Shoulder prosthetic device is seen on the right . There are mild degenerative changes of the thoracic spine .
    OUTPUT:
    
Mild pulmonary edema and small left pleural effusion . Otherwise , no significant change .