Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior radiographs on ___ , there is no significant change . An air - fluid level at the right apex is unchanged . No focal consolidation is seen to suggest pneumonia . The cardiac and mediastinal silhouettes is unchanged . A left Port - A - Cath is stable in position .
    OUTPUT:
    
No definite pneumonia .