Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No PICC line is seen . Diffuse prominence of the pulmonary interstitium is thought to reflect chronic lung disease . There is no convincing evidence for superimposed pulmonary edema . The cardiac silhouette remains mildly enlarged . The mediastinal and hilar structures are unremarkable .
    OUTPUT:
    
No right upper extremity PICC visualized .