Definition An epidermoid cyst may be defined as a cyst arising from ectodermal cell-rests, and in particular from epidermal primordia. In the literate, varieties of cysts from dermoids, both sequestration and implantation types to cholesteatomas, have been included under the heading of epidermoids. Some authors have included wens or sebaceous cysts in the classification of epidermoids. In a sim...

261 We appreciate Dr. Yu Jin Kim for her insightful commentary on our recent article [1]. The additional masses that are mentioned in Dr. Yujin Kim’s commentary were attached to the two masses shown on the left side of the gross specimen figure, each with its own epidermal layer [1,2]. The epidermal cyst in the center of the coronal computed tomography image is that which had the foreign body r...