Review of imaging modalities and radiological findings of calvarial lesions

Figure 11  Hyperostosis frontalis interna in sixty-seven years old female patient who underwent imaging for headache. A: Axial computed tomography on the bone window shows symmetrical calvarial thickening (arrows) of similar density to the bone extending from the inner table to the extra-axial space in the bilateral frontal bones; B: Hyperostosis frontalis interna is hypointense on axial enhanced susceptibility weighted angiography (eSWAN) images, C: Hyperintense on axial filtered phase eSWAN images, signal intensities compatible with hyperosteosis frontalis interna (arrows) at the level of the inner table of the frontal bone.