Fig. 9.

(A) Epidermoid cyst in a subcutaneous frontal region with a lower density. (B) Axial head CT image in the soft tissue window showing an osseous destructive lesion in the right frontal calvarium with beveled edges and a soft tissue component. Pathology proved epidermoid cyst in a 6-year-old boy. (C) Axial CT scan showing suprasellar epidermoid cyst with the calcified wall. (D) A bone-destroying epidermoid cyst with sclerotic borders is detected on the lateral wall of the left orbit on axial CT scan image. The lesion mainly located on the greater wing of the sphenoid extends into the zygomatic bone, temporalis fossa, and orbit. (E) A 40-year-old male with an epidermoid cyst in the left knee. Axial CT image in the bone window reveals a mass with the homogeneous density of soft tissue extending into the femur bone. Notice the lesion that causes the femur to have sclerosis. (F) Axial CT image obtained through the chest demonstrates a complex subcutaneous cystic masses of the posterior aspect of the upper back. The mass has coarse regions of calcifications.