Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are diffuse patchy opacities throughout both lungs , particularly within the right lung base which have increased compared to the most recent prior examination . Given the absence of hilar indistinctness and vascular enlargement , findings are most suggestive of worsening multifocal pneumonia given the clinical history . In addition , moderate cardiomegaly is stable and no new pleural effusions are identified . Right humeral prosthesis appears similar to prior examination . Severe degenerative change of the left glenohumeral joint is unchanged .
    OUTPUT:
    
Increased diffuse lung parenchymal opacities which are most suggestive of multifocal pneumonia given the clinical history and lack of evidence for pulmonary edema .