Fig. 1.

(A) Preoperative view showing the congenital epidermoid cyst in case 1. A round, cystic mass measuring approximately 2×2 cm in size is seen in the right posterosuperior aspect of his right helix of the ear. (B) Intraoperative view. This photograph shows a cystic mass and depressed cartilage. (C) Photomicrograph of the mass. The cystic wall is lined by squamous epithelium and keratin materials. No sebaceous gland, hair follicle, or sweat gland is seen (H&E, ×100). (D) Intraoperative view of acquired epidermoid cyst. A round, cystic mass measuring approximately 2×2 in size is seen in the right superior pole of his right helix of the ear.