Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were provided . This exam is technically limited due to a poor exposure . A right PICC terminates in the upper SVC . Mild interstitial edema has improved . There is no focal consolidation , pleural effusion or pneumothorax . Cardiomegaly is stable .
    OUTPUT:
    
Technically suboptimal exam but no definite pneumonia . Right PICC in the upper SVC , just past the confluence .