Perineural spread of a skull base tumour has a wide differential diagnosis. Skull base tumours are often difficult to access for biopsy, rendering radiological diagnosis of paramount importance. Though atypical meningioma is a rare cause of perineural spread, the high overall incidence of meningioma warrants its consideration in the differential diagnosis. When considered, the distinct imaging characteristics of meningioma such as a dural tail, internal calcification and hyperostosis of the adjacent bone differentiate it from other possible diagnoses.

From the manuscript

A rare case of atypical skull base meningioma with perineural spread

Abstract
Atypical meningioma is a rare cause of perineural tumour spread. In this report, we present the case of a 46-year-old female with an atypical meningioma of the skull base demonstrating perineural tumour spread. We describe the imaging features of this condition and its distinguishing features from other tumours exhibiting perineural spread.