Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An indwelling catheter is again seen , tip in the region of the SVC / RA junction , unchanged . There is background emphysematous change . Compared with the prior film and with the chest CT from ___ , rounded densities over the lung bases are consistent with nipple shadows . Possible minimal crowding of vessels in the right cardiophrenic region , adjacent to the right nipple shadow , but no distinct focal infiltrate identified in either lung . No frank consolidation and no effusion .
    OUTPUT:
    
No acute pulmonary process identified . Possible minimal crowding of vessels at the right lung base .