_:vb50946644 . _:vb50946644 . _:vb50946644 . _:vb50946644 . _:vb50946644 "A central nervous system disease that is located_in the skull and is characterized by a collection of pus (infected material) inside the skull."^^ . _:vb50946644 . _:vb50946644 "url:https://www.nlm.nih.gov/medlineplus/ency/article/001416.htm"^^ .