Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left PICC line tip in the upper right atrium , difficult to compared to prior radiograph as it was not well seen previously . Electronic devices bilateral chest , with leads projected over bilateral neck . Linear strand of atelectasis or fibrosis left costophrenic angle . 2 radiopaque densities projected over upper abdomen on lateral radiograph only , may be external to the patient . No infiltrates . No pleural effusions .
    OUTPUT:
    
Left PICC line tip in the upper right atrium .