Localisation of lesion

http://lifeinthefastlane.com/2009/05/brainstem-rules-of-4/

Images:
http://rad.usuhs.edu/medpix/kiosk_image.html?mode=&imid=37944&pt_id=11166&quiz=no&page=&th=&map=&skiprows=&this_week=&skipcases=0&maxcases=5&sth=-1#pic