Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Opacity at the right lung apex is new compared with the ___ radiograph and in keeping with findings on the ___ CT scan . Allowing for differences in modalities , it may have progressed compared with the with yesterday 's CT scan . There is minimal atelectasis at the left base , similar to the prior film . New linear atelectasis in the left mid-zone . Lungs are otherwise grossly clear . No CHF or effusion detected . There is a new right - sided IJ sheath in place in catheter entered follows the expected course of a Swan - Ganz catheter , with multiple radiopaque segments . This presumably represents the EKOS catheter . The tip overlies the proximal right pulmonary artery . No pneumothorax detected .
    OUTPUT:
    
Opacity at the right lung apex new compared with ___ radiographs and possibly progressed compared with ___ CT . Although non-specific in appearance , given its peripheral location , it may very well represent a pulmonary infarct to patient 's known thrombus . Minimal atelectasis left base . Right IJ line which is thought to represent EKOS catheter , with tip overlying proximal right pulmonary artery .