Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Port - A - Cath catheter tip is at the lower SVC . Heart size and mediastinum are stable . Upper lung interstitial opacities are unchanged in the lower lobes are clear . No focal consolidations that a new seen . No pleural effusion or pneumothorax is noted .
    OUTPUT:
    
Residual interstitial opacities in the right upper lobe are likely sequelae of prior infection / lung injury . No acute cardiopulmonary process .