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Case Reports in Medicine
Volume 2011, Article ID 362170, 6 pages
Case Report

Dermoid Cysts of the Floor of the Mouth: Two Case Reports

1Department of Oral and Maxillofacial Surgery, General Hospital of Kilkis, 61100 Kilkis, Greece
2Department of Physical Education and Sports Sciences (at Serres), Aristotelian University of Thessaloniki, 62100 Serres, Greece
3Department of Otorhinolaryngology, Head and Neck Surgery, Hippokration General Hospital, 54642 Thessaloniki, Greece

Received 10 April 2011; Revised 13 June 2011; Accepted 11 July 2011

Academic Editor: Indraneel Bhattacharyya

Copyright © 2011 Christos Makos et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Dermoid cysts in the floor of the mouth may be congenital or acquired. The congenital form, according to the main theory, originates from embryonic cells of the 1st and 2nd branchial arch. The acquired form may be due to traumatic or iatrogenic causes and as a result of the occlusion of a sebaceous gland duct. Its occurrence is less and is estimated to be from 1.6 to 6.4% of the dermoid cysts of the body in adults and 0.29% of the head and neck tumors occurring in children. They may also be classified as anatomical and histological. Anatomically, they are divided into median genioglossal, median geniohyoid, and lateral cysts, while histologically they are divided into epidermoid, dermoid cysts and teratomas. Clinically, a distinction between supra and inferior type as well as between central and lateral type is proposed in relation to themylohyoidmuscle and themidline, respectively. Histologically, an estimation of dermoid, epidermoid, and teratoid cysts is reported. Enucleation via intraoral and/or extraoral approach is the method of treatment. Two case reports of dermoid cysts in the floor of the mouth are presented in this paper, and an evaluation with regard to pathology, clinical findings, differential diagnosis, and treatment is discussed.