Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate low lung volumes which accentuate the pulmonary vasculature . The cardiac silhouette is top normal in size , the mediastinal contours are notable for an ectatic - appearing unfolded arch with mural calcifications . There is no pneumothorax or pleural effusion . There is a marked thoracic kyphosis . No bony injury is seen , however if there is concern for rib fracture , repeat dedicated views are recommended with a BB marker to indicated the site of pain .
    OUTPUT:
    
No acute chest abnormality .