Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral mildly low lung volumes are noted with crowding of bronchovascular markings . No focal consolidation , pleural effusion or pneumothorax is noted . The cardiac , mediastinal and hilar contours are mildly accentuated which may in part be due to low lung volumes . The patient is status post CABG . A left shoulder prosthesis is noted .
    OUTPUT:
    
No acute cardiopulmonary process .