Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable single upright radiograph demonstrate increased patchy opacity within the right lower lung zone concerning for an infectious process . Alternatively , this may reflect aspiration . Cardiomediastinal and hilar contours are within normal limits . There is no large pleural effusion or pneumothorax . Patient is status post trans pedicle cervical hardware . A ventriculoperitoneal shunt is identified .
    OUTPUT:
    
Focal opacity within the right lower lung zone concerning for pneumonia in the correct clinical setting . Alternatively , this may reflect aspiration .