Review of imaging modalities and radiological findings of calvarial lesions

Figure 4 Epidermoid cyst in sixty-five years old male patient who underwent imaging for syncope. A and B: Axial computed tomography on the bone window show a lesion (arrows) in the left occipital bone adjacent to the lamboid suture with an irregularity in the outer table; C: On axial T1-weighted image, the well-circumscribed lesion in the left occipital bone is hypointense; D: On axial T2-weighted image, the lesion is hyperintense; E: On axial diffusion-weighted image, the lesion is hyperintense; F: On axial apparent diffusion coefficient image, the lesion is hypointense and shows diffusion restriction (arrows).