Primary Intraosseus Meningioma Diagnosed by Fine Needle Aspiration Cytology

Abstract

Primary extradural meningiomas presenting as scalp swelling is uncommon. Their diagnosis by fine needle aspiration is rare as majority of the lesions are hyperostotic. Primary intraosseus meningiomas involving the skull constitute only about 2% of meningiomas and are often mistaken for other primary or secondary bone tumors. The authors report a case of primary calvarial meningioma involving the parietal bone of a 52-year-old male diagnosed by fine needle aspiration cytology.