Calvarial hyperostosis

Synonyms

1

Overview

An excessive growth of bone, which may lead to formation of a mass projecting from a normal bone (exostosis). This abnormality may be seen in numerous musculoskeletal disorders. A widespread form of hyperostosis characterized by flowing calcification and ossification of vertebral bodies occurs in diffuse idiopathic skeletal hyperostosis DISH . Radiographic abnormalities are observed most commonly in the thoracic spine.

Symptoms

• Prominent frontoparietal bones

Causes

Hyperostosis associated with meningioma enplaque occurs commonly either along the sphenoid ridge or the convexity. We report an unusual patient who presented with extensive bilateral calvarial hyperostosis in association with an en-plaque bi-parasagittal meningioma.