Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval development of a large area of left lower lobe atelectasis , with associated elevation of the left hemidiaphragm and reduced left lung volume . Small adjacent left pleural effusion . The right lung is otherwise unremarkable . No specific area of focal consolidation . There is no pneumothorax . The heart size is normal . The left PICC line is intact and unchanged in position . Surgical hardware from the right shoulder replacement and cervical spine fixation appear intact . No acute osseous abnormality . No sub - diaphragmatic intra-abdominal free air .
    OUTPUT:
    
1 . New large left lower lobe atelectasis . 2 . Small left pleural effusion . 3 . No specific focal consolidation to suggest pneumonia .