Ancient Schwannoma of the Trigeminal NerveMimicking High Grade Lesion

Ancient schwannomas rarely found in the central nervous system and ancient change in anintracranial schwannoma (intracranial portion of the trigeminal nerve) is extremely rare. A seventyyearman presented with headache of 3 months duration and one episode of generalized tonic-clonicseizures. Imaging findings were suggestive of left temporal high grade lesion. During surgery therewas well capsulated extra-axial lesion. Histology was suggestive of ancient schwannoma. Based onthe literature it is suggested when the intraoperative appearance of a cerebello-pontine lesion isconsistent with a schwannoma and the frozen section is suggestive of a malignant lesion, a completeexcision of the lesion can be carried out.