Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are slightly low lung volumes . No focal consolidation is seen . There is no pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are stable and unremarkable . No displaced fracture is identified .
    OUTPUT:
    
No acute intrathoracic process . No definite left - sided rib fracture ; however , if there is high clinical concern , dedicated rib series or chest CT is more sensitive .