Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There is left base atelectasis , underlying consolidation can not be excluded . No definite pleural effusion is seen . The right lung is clear . No pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . No displaced rib fracture is seen ; however , if clinical concern for rib fracture persists , suggest dedicated rib series .
    OUTPUT:
    
Small linear area of opacity in the left lung base most likely represents atelectasis although underlying consolidation is not excluded . No displaced rib fracture is seen , however , as finding is on side of patient pain , suggest dedicated rib series for further evaluation .