Dermoid Cysts of the Lateral Floor of the Mouth: A Comprehensive Anatomo-Surgical Classification of Cysts of the Oral Floor

Nonodontogenic cysts of the oral and maxillofacial region: demographic profile in a Brazilian population over a 40-year period

“…Although the present results agree with a female predominance of dermoid cysts, epidermoid cysts showed a relatively similar distribution in both genders. Most patients with epidermoid and dermoid cysts are between 10 and 35 years of age [17,20,24], in agreement with the findings of the present study.…”

Choristoma Involving the Floor of the Mouth and the Anterior Tongue: A Case of Teratoid Cyst With Gastric and Respiratory Epithelia

“…On the basis of the anatomical subsite and relationships between the cyst and the muscles of the floor of the mouth, dysontogenic cysts can be defined as: median genioglossal, median geniohyoid, and lateral. In the literature, congenital cysts on the floor of the mouth are usually generally named as "dermoid" but from an histological point of view, they had been properly classified as epidermoid (lined by just squamous epithelium), true dermoid (when skin adnexa are found within the cyst wall) or teratoid (when also mesodermal elements such as bone, muscle, respiratory and gastrointestinal tissues, and a fibrous capsule are found) [2,3]. Cysts located on the floor of the mouth account for 1.6% of all the "dermoid" cysts from the head and neck region [4], and among them teratoid cysts are the least common accounting for about 1.8% [5].…”

Sub-Lingual Epidermoid Cyst

“…Anatomically, three different types of dermoid cysts can be distinguished; median genio-glossal (sublingual), median geniohyoid (submental), and lateral, according to the anatomic relationship between the cyst and the muscles of the floor of the mouth [5]. The floor of the mouth is the second most common site for dermoid cysts in the head and neck region after the lateral eyebrow [6].…”

“…Although dermoid cysts represent a separate entity, the term ''dermoid'' is generally used to indicate all 3 categories: (a) Epidermoid cyst-lined with simple squamous epithelium with a fibrous wall and no adnexal structures, (b) True dermoid cyst-an epithelial-lined cavity with keratinization and skin appendages (sebaceous and sweat glands and hair follicles in the cyst wall), also known as a compound cyst and (c) Teratoid cyst-lined with a range of epithelia, from simple squamous epithelium to ciliated respiratory type, containing derivatives of ectoderm, mesoderm, and endoderm, also known as a complex cyst [6]. All 3 types contain a cheesy keratinous material.…”