Extra-axial brain tumours and cysts

Maria Politi, Kirill Alektorov, Lia Angela Moulopoulos, Panagiotis Papanagiotou


Extra-axial brain tumours are the most common adult intracranial neoplasms and include a broad spectrum of pathologic subtypes. Meningiomas are the most common extra-axial brain tumours. They may occasionally be difficult to differentiate from other dural-based masses with more aggressive biologic behaviour (e.g. haemangiopericytoma or dural-based metastases). When the mass is located in the cerebellopontine angle, schwannoma is the most common neoplasm, followed by meningioma and epidermoid cyst. Magnetic resonance imaging narrows the differential diagnosis and provides guidance for patient management. This pictorial essay describes the radiographic features of extra-axial lesions and provides an overview of the most common types of extra-axial tumours and their typical imaging features.


Brain tumours; CT; MRI; Meningioma; Scwannoma; Epidermoid

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DOI: http://dx.doi.org/10.36162/hjr.v5i3.390


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