Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided Port - A - Cath is seen terminating in the low SVC without evidence of pneumothorax . There is mild diffuse increase in interstitial markings bilaterally which may be due to mild interstitial edema versus atypical infection . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . Surgical clips overlie the left chest wall and the right upper quadrant .
    OUTPUT:
    
Mild diffuse increase in interstitial markings bilaterally may be due to mild interstitial edema or atypical infection .