Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The hilar and mediastinal contours are normal . There is a focal nodule overlying the left upper lung at the posterior left 6th rib , measuring 5 - mm , which appears overall larger compared to the prior exam . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Focal nodule overlying the left upper lung measuring 5 - mm and appears slightly larger compared to the prior exam . Recommend CT scan for further evaluation and to exclude intra-thoracic malignancy . These findings were placed in the critical results dashboard by Dr . ___ at 5 pm on the day of the exam .