A decade of neglecting sublingual mass: A case report of epidermoid cyst

Epidermoid cysts may occur due to anomalies during fetal development, approximately 1-2 % occur in the oral cavity. A cyst lumen filled with fluid or keratin without skin adnexal structures (such as hair, hair follicle, sweat gland, sebaceous gland) can be defined as epidermoid cyst. 7 % of these cysts occur in the head and neck, 1.6 % of which appear in the oral cavity. Gender distribution is balanced but more prevalent in males. Epidermoid cysts are the most common cutaneous cysts. These cysts are rarely discovered prior to puberty. It has been reported that 1 % of epidermoid cysts will malignantly develop into squamous cell carcinoma (SCC) or basal cell carcinoma (BCC).