Extradural petromastoid calcifying pseudoneoplasm of the neuraxis (CAPNON): Case report and literature review

摘要

Background: Calcifying pseudoneoplasm of the neuraxis (CAPNON) is a very rare tumor with fewer than 70 cases reported in the literature. In general, this tumor occurs intracranially either within the brain parenchyma or in an extra-axial location, but it has also been described within the spine as an extra-axial lesion.