Clinical symptoms are headaches 93, 5%, vomiting 41, 3%, Parinaud 30, 4%, papilledema 17, 4%, sixth nerve palsy 6, 5%, epilepsy 8, 7%, dizziness 8.7%, double vision 8, 7%, cerebellar syndrome 2, 2%, weakness on left side of body 4, 3%, weak legs 6, 5%, weak limbs 4, 3%.