Unusual Dermoid Cyst in Oral Cavity

Abstract

Dermoid cysts in oral cavity are unusual lesions. Their etiology is not yet clear and can be associated with trapped cells as a result of the inclusion error resulting in the development into the ectoderm, mesoderm, and endoderm tissues. The aim of this case report is to evidence the presence of a dermoid cyst in the floor of mouth surgically removed. In the present case, the lesion showed soft consistency, floating, regular borders, smooth surface, and the same color as the adjacent mucosa, asymptomatic and measuring 4.5 × 5.5 cm in its greatest diameter. The initial diagnostic was ranula in consequence of the similarity with clinical characteristics and localization. After surgical removal lesion, a fibrotic capsule was identified with a friable material with intensive yellow color. The microscopic exam showed cystic lesion with cavity lined by squamous stratified epithelium hyperorthokeratinized. Cutaneous attachments, such as sebaceous glands and hair follicles, were present in connective adjacent tissue. Surgical intervention is elective in these situations. All dentists must have a thorough knowledge of this unusual lesion.

Dermoid Cyst of Submental Region: A Case Report

“…An intraoral approach is recommended in cases of cysts above the mylohyoid muscle and the extraoral technique is chosen in very large lesions which affect submandibular region and in situations of infection process that may interfere to patient's airway [1]. Recurrence of dermoid cysts is not expected, and malig¬nant transformation, though rare, has been reported in 5% cases [3,7].…”

“…Dermoid cysts are cystic malformations that can arise in the head and neck area with an incidence ranging from 1.6% to 7% [1]. Of these, approximately 11.5% are located in the floor of the mouth which is the second most common location (lateral eyebrow being the most common) [2].…”

“…Of these, approximately 11.5% are located in the floor of the mouth which is the second most common location (lateral eyebrow being the most common) [2]. There is no sex predilection and the dermoid cysts are common affecting people between the ages of 15 and 35 years, during a period of maximal epithelial activity [1]. They are thought to be congenital in origin, by entrapment of pluripotent cells along the lines of embryonic fusion [3] but the literature also indi¬cates they can also develop from acquired factors such as trauma or surgi¬cal implantation that forces epithelial cells into deep tissues [4].…”

Unusual Presentation of Intralingual Dermoid Cyst with Review of the Literature

“…Dermoid cysts, a type of epidermoid cyst, are rare entities with approximately 7% found in the head and neck region [1,2]. When they occur in the oral cavity, they are most often found in the floor of mouth [2,3].…”

“…When they occur in the oral cavity, they are most often found in the floor of mouth [2,3]. These cysts grow slowly, are wellcircumscribed and are encapsulated [2].…”