Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The course of the right internal jugular central venous catheter is similar to that observed on the radiograph of earlier the same date , with persistent medial course of the catheter beginning at the level of the inferior aspect of the clavicle and extending just below the tracheobronchial angle . On the lateral view , the catheter is located approximately 2 .3 cm anterior to the anterior margin of the trachea , which is the approximate distance from the trachea to the superior vena cava at this level on prior neck CT , which included part of the chest . The location on the lateral view is not consistent with previous concern of potential placement into the internal mammary vein . Slight widening of the mediastinum is consistent with prominent mediastinal fat on prior neck CT of ___ . The heart size is normal . Lungs are clear and there are no pleural effusions or pneumothoraces .
    OUTPUT:
    
Persistent unusual medial course of right internal jugular central venous catheter , which courses more medially than a previous right internal jugular venous catheter present on prior chest x-rays and CT scans in ___ . Position on lateral view excludes internal mammary vein location and suggests a central venous location , but inadvertent arterial placement can not be excluded .