a comparison was made to priior filmsshowing the thoracic spine and ribs. the 2 veiws of the chest demonstratea normal appearing heart, and mediastinal silhouettes. The lungs are free of infiltrate, enfusion and /mass lesion .there is however,increased retrosternal air space and mild interstitial prominence, as well as flattening of the hemidiaphragms, compatable with hyperaeration. the osseous structures are unremarkable. Incidental ote is made of changes suggesting early pulmonary arterial hypertention