Atypical invasive secondary meningioma with extensive intracranial invasion: A case report

Invasive and metastatic version of meningioma as an atypical type of the tumor has been rarely described in the literatures. Recurrent secondary meningioma invaded to pre-orbital soft and hard tissues can be found in extremely rare cases. We described a case of atypical invasive meningioma invaded to deep orbital soft tissue due to recurrence of the primary tumor previously treated by surgical removing and chemoradiotherapy. In this case, invasion to orbit, paranasal sinuses and masticator, infratemporal and buccal spaces leading to destruction of adjacent bony structures and mass engulfing the right globe resulting in considerable proptosis was the prominent feature.