Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . In comparison to prior study , missing short segment of the right posterior fifth rib , left acromioclavicular joint osteoarthritis , and bilateral glenohumeral joint arthritis are again seen ; however , there is increased lucency and thinning of the posterior seventh rib when compared to most recent ___ chest radiograph that may represent worsening osteoporosis given patient 's debilitated and wheelchair - bound state . There are no sclerotic bone lesions noted . There is mild cardiomegaly with mild pulmonary vascular congestion and cephalization of pulmonary vessels without overt pulmonary edema . Bibasilar subsegmental atelectasis are also noted . No pneumothorax seen . Old fracture of the right fifth posterior rib unchanged from prior chest radiograph .
    OUTPUT:
    
1 . Mild cardiomegaly , fluid overload , without overt pulmonary edema . 2 . Stable osteoarthritis of the bilateral glenohumeral joint , severe left acromioclavicular joint osteoarthritis , increased lucency of the ribs ( particularly the right seventh posterior rib ) that may represent worsening osteoporosis in a debilitated and wheelchair - bound patient .