Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is moderately enlarged . There is similar mild unfolding of the thoracic aorta . The mediastinal and hilar contours appear unchanged . As before , the minor fissure appears slightly thickened . Depicted on the lateral view is a moderate subpulmonic effusion with associated opacity , probably due to atelectasis , likely unchanged . There is no pneumothorax . Right - sided rib deformities appear unchanged . Moderate anterior osteophytes are noted throughout the thoracic spine . The right shoulder demonstrates severe degenerative changes including complete effacement of the glenohumeral joint with subchondral sclerosis and prominent marginal osteophyte formation .
    OUTPUT:
    
Persistent moderate right - sided pleural effusion ; otherwise unremarkable .