UNUSUAL CT APPEARANCES WITH A SUPRATENTORIAL MENINGIOMA

The majority of intracranial meningiomas are isodense, well-marginated masses, adjacent to a dural surface. They show intense uniform enhanc ement following intravenous contrast. Atypical appearances can occur. Hypodense meningiomas have been described due to necrosis, cystic chan ge or lipidisation of the tumour. A meningioma is described which show ed two unusual features on computed tomography-a uniformly hypodense m ass on an unenhanced scan and only minimal contrast enhancement. Exten sive lipidisation of the tumour was demonstrated histologically.