Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Sternotomy , valve replacements . Increased heart size and pulmonary vascularity , mildly improved since prior exam , and accentuated today secondary to shallow inspiration . Improved right basilar opacity . Resolved left basilar opacity . Aortic calcification . Prominent central pulmonary arteries , suggest pulmonary artery hypertension . Degenerative changes thoracic spine , kyphosis , stable . No pleural fluid .
    OUTPUT:
    
Mildly decreased heart size , pulmonary vascularity . Suggestion of pulmonary artery hypertension . Improved right basilar opacity .