_:vb50954368 . _:vb50954368 "url:https://www.merckmanuals.com/professional/ear,-nose,-and-throat-disorders/tumors-of-the-head-and-neck/jaw-tumors"^^ . _:vb50954368 "A hematologic cancer and central nervous system neoplasm that is located_in the central nervous system."^^ . _:vb50954368 . _:vb50954368 . _:vb50954368 .