FINDINGS:
A right-sided large-bore central catheter is again seen,
 terminating in the right atrium, unchanged from the prior study.  Mild diffuse
 interstitial opacities are stable, thought to represent chronic
 hypersensitivity pneumonitis on chest CT from .  No focal
 consolidation, pleural effusion, or evidence of pneumothorax is seen.  The
 cardiac and mediastinal silhouettes are stable, with the cardiac silhouette
 mildly enlarged with the aorta calcified and tortuous.  Thoracic scoliosis is
 again seen.  There is stable compression of a mid-to-lower thoracic vertebral
 body.  Again seen is mild indentation of the left trachea at the level of the
 clavicles, unchanged compared to multiple priors since .

IMPRESSION:
No significant interval change.