A diffuse leptomeningeal glioneural tumor case producing hydrocephalus and polyradiculopathy - Picarelli, Helder; Nepomuceno, Thales Bhering; Ribeiro, Renan Ribeiro; Yamaki, Vitor Nagai; Figueiredo, Eberval Gadelha (Brazilian neurosurgery-arquivos brasileiros de neurocirurgia, 2020)