Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest was obtained . The heart is of normal size with unremarkable cardiomediastinal contours . Lungs are clear without focal or diffuse abnormality . Pulmonary vasculature is unremarkable . No pneumothorax or pleural effusion . Bilateral costophrenic angles are excluded . Cervical fusion hardware is unchanged . Chronic right clavicle deformity .
    OUTPUT:
    
No evidence of acute intrathoracic process . Bilateral costophrenic angles excluded .