Cortical Dysplasia

18-year-old male with a palpable abnormality at the base of the neck anteriorly with occasional swelling. There is a rounded, well-circumscribed lesion in the anterior to the thyroid gland immediately deep to the overlying cutaneous surface which demonstrates T1 signal which is isointense to skeletal muscle, T2/STIR hyperintense, and diffusion restricting. There is faint wispy central contrast enhancement. The differential included thyroglossal duct cyst, lymphatic malformation, dermoid, epidermoid, bronchogenic cyst and thymic cyst. At surgical resection, this lesion was found to be a dermoid. Congenital cervical cystic lesions are usually slow-growing and typically cause symptoms because of either acute enlargement or superimposed infection. Painless soft tissue lesion or fluctuate mass is typically the first clinical manifestation. Dermoid cysts typically manifest in the second or third decade of life. No gender predilection is noted. The lateral eyebrow region is the most common site of a dermoid in the head neck region with the second most common site at the floor of the mouth.