Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The frontal view is extremely rotated to the left , with complete projection of the mediastinum over the left lung , which limits assessment . The expanded right lung is unremarkable . Assessment in the lateral view is also limited due to superimposition of the arms , but allowing for technical limitations , there is no spine sign , pleural effusion , or abnormality in the anterior mediastinum . No pneumothorax is identified . Artifacts from external hair devices are again seen .
    OUTPUT:
    
Limited examination . No evidence of acute cardiopulmonary process .