Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left PICC tip appears to terminate within the proximal right atrium . Heart size is top normal with a left ventricular predominance . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is not engorged . Minimal atelectasis is noted in the lung bases without focal consolidation . No pleural effusion or pneumothorax is present . There are no acute osseous abnormality . Degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
Left PICC tip terminates within the proximal right atrium . Recommend withdrawal by approximately 5 cm for optimal positioning .