Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable chest radiograph is severely limited given patient motion . As per technician note , the patient had great difficulty with positioning and following instructions . Within this limitation , the heart is mildly enlarged . There are perihilar opacifications which likely represent severe but improved pulmonary edema , though superimposed pneumonia is not excluded . Likely small bilateral pleural effusions . Severe degenerative changes at the right glenohumeral joint .
    OUTPUT:
    
Severely limited examination . Mild cardiomegaly . Persistent but decreased perihilar opacification consistent with pulmonary edema . Given degree of severity of edema can not exclude superimposed pneumonia . Bilateral small pleural effusions .