Intradural osteomas: Report of two cases

Figure 2 Images of Case 2. A: Computed tomography showed a homogeneous high-density lesion isolated under the right greater wing of the sphenoid; B: Gross view of the arachnoid-covered bony tumor, located in the sylvian fissure; C: Gross view of a large superficial cortical vein passing through the mass; D: Hematoxylin-eosin-stained section (400 ×) showed mature bone, made up of the Haver's system and normal osteocytes between the layers of osteoid material, in pathology examination.