Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There are relatively low lung volumes with mild bibasilar atelectasis . No definite focal consolidation is seen . There is no pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are unremarkable . Multiple displaced left - sided rib fractures are seen , including the posterolateral left fourth and fifth ribs . Rib fractures are better assessed on dedicated rib series or CT . There is a rounded calcification measuring 5 .3 x 5 .0 cm projecting over the posterior left upper quadrant , which is nonspecific but could be within the spleen and represent a calcified hematoma or less likely could be within the stomach . Difficult to exclude a nondisplaced fracture of the distal clavicle .
    OUTPUT:
    
1 . There are at least two displaced left - sided rib fractures involving the posterolateral left fourth and fifth ribs without evidence of a pneumothorax . Difficult to exclude nondisplaced fracture of the distal left clavicle . 2 . Relatively low lung volumes with bibasilar atelectasis . 3 . 5 .3 x 5 .0 cm rounded calcification under the left hemidiaphragm in the posterior left upper quadrant is nonspecific , could represent a splenic lesion including a calcified hematoma , could be within the stomach , unlikely to be vascular .