Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is a right - sided indwelling catheter , with tip near SVC / RA junction , unchanged Lungs are hyperinflated and the diaphragms are flattened , consistent with COPD . Cardiomediastinal silhouette is unchanged . There is upper zone redistribution , without overt CHF . In the left midzone , there is a patchy irregular opacity that is similar in location and appearance to the opacity seen on the ___ chest CT . However , note is made that this finding had resolved on the ___ PET - CT . Otherwise , no focal consolidation or effusion . Old healed left - sided rib fractures again noted . Possible old healed distal right clavicle fracture , with AC joint degenerative changes noted .
    OUTPUT:
    
Focal patchy opacity in the left mid-zone which could represent a new focal infiltrate . Follow - up to resolution is recommended .