Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tracheostomy tube is appropriately positioned . A left - sided pacemaker with associated right atrial and right ventricular leads is unchanged . Cervical spine fusion hardware is incompletely assessed . There is a right PICC ending in the mid SVC , unchanged . Right lower lung atelectasis is slightly increased . Left lower lung atelectasis has substantially improved . The lungs are otherwise clear . Heart size is normal . The mediastinal contours are unchanged . There are no definite pleural effusions . No pneumothorax .
    OUTPUT:
    
1 . Increased right lower opacities , could be due to increasing atelectasis or reexpansion pulmonary edema . 2 . Decreased left lower lung atelectasis .