Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There engorgement of the central pulmonary vasculature and increased interstitial markings throughout . There is no pleural effusion or confluent consolidation . Cardiomediastinal silhouette is stable . Prior left PICC is no longer visualized .
    OUTPUT:
    
Increased interstitial markings bilaterally which could be due to interstitial edema although given chronicity of this finding , a chronic underlying interstitial process is possible as is atypical infection .