Spine metastasis of intracranial hemangiopericytoma: case report of two treatments - Araujo, Fernando Flores de; Narazaki, Douglas Kenji; Teixeira, William Gemio Jacobsen; Marcon, Raphael Martus; Cristante, Alexandre Fogaca; Barros Filho, Tarcisio Eloy Pessoa (Acta ortopedica brasileira, 2019)