IMPRESSION:
In comparison with the study of , on the upright view there appear
 to be 2 or possibly summary air-fluid levels but could represent areas of
 loculated or hydrothorax. No definite pneumothorax is appreciated. The
 remainder the study is essentially unchanged. An unusual appearance to the tip
 of the Port-A-Cath raises the possibility of it extending into the azygos
 system.