Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view in upright position shows stable position of the right subclavian PICC with tip ending in the upper SVC . Moderate lung volume is normal without consolidation or nodules suspicious for infection or malignancy . Linear atelectsis is at the left lung base . Cardiomediastinal silhouette is normal . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Linear atelectasis at the left lung base , no sign of acute cardiopulmonary process .