Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes , which accentuate the bronchovascular markings . Given this , the there is linear left mid lung atelectasis / scarring as well as likely atelectasis in the right mid lung zone . Perihilar opacities may relate to prominence of the pulmonary vasculature and low lung volumes although underlying infection is difficult to exclude in the appropriate clinical setting . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . right glenohumeral joint degenerative change is incidentally noted .
    OUTPUT:
    
Low lung volumes which accentuate the bronchovascular markings . Left mid lung linear atelectasis / scarring . Bilateral perihilar opacities may relate to prominence of pulmonary vasculature and low lung volumes although underlying infection is difficult to exclude in the appropriate clinical setting .