Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left subclavian approach dialysis catheter is seen in unchanged position . Linear atelectasis is seen at the left base , improved from prior . No focal consolidation , pleural effusion or pneumothorax . Stable cardiomediastinal silhouette . The second most superior median sternotomy is displaced to the left compared to the remainder of the sternotomy wires however this is unchanged dating back to at least ___ , possibly reflecting chronic dehiscence .
    OUTPUT:
    
No acute process .