Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Posterior opacity projective over the spine on the lateral view could be due to rotation of the patient . Recommend repeat lateral radiograph with proper technique for further evaluation . There is no pleural effusion or pneumothorax . The heart size is normal . The mediastinal contours are normal .
    OUTPUT:
    
Lower posterior opacity projecting over the spine could be due to rotated position of the patient . Recommend repeat lateral radiograph with proper technique to re-assess .