Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP view of the chest . Bulging of the mediastinal contours and enlarged hila bilaterally are consistent with known lymphadenopathy . There is no evidence of pneumothorax . No pleural effusion . No focal consolidation . Bibasilar atelectasis . Heart size is normal .
    OUTPUT:
    
Evidence of known mediastinal lymphadenopathy . No acute process . No pneumothorax . Bibasilar atelectasis .