Dermoid cyst (DC) is a cystic lesion of developmental origin and uncertain etiology that rarely affects the floor of the mouth. We report a case of a large lesion found in the submental and submandibular region in a 25-year-old male patient. Computed tomography revealed extensive hypodense lesion in the submental and submandibular space without peripheral enhancement. The microscopical analysis showed a cystic cavity lined by orthokeratinized stratified squamous epithelium. The cystic capsule was composed of dense fibrous connective tissue containing cutaneous attachments, such as sebaceous and sweat glands. The diagnosis of DC was made. The differential diagnosis of expansive sublingual lesions can be clinically challenging due to the similarity with several lesions frequently observed in this region. Herein, we describe a case of extensive DC arising in the floor of the mouth, presenting clinical, imaging, and microscopical features.
JayasuriyaNSS, SiriwardenaS, TilakaratneWM, ParthiepanS. Malignant transformation of a longstanding submental dermoid cyst to a carcinosarcoma: a case report. J Med Case Reports. 2017;11(1):11. [https://doi.org/10.1186/s13256-016-1186-y]. [PMID:28077165]
GlaasMF, SchipperJ, KajasiN, AlbrechtA. The youngest reported and successfully treated patient with a dermoid cyst of the parotid gland: a rare pediatric case. Case Rep Otolaryngol. 2017;2017:4187030. [https://doi.org/10.1155/2017/4187030]. [PMID:28791189]
PatelH, MaylJ, ChandraB, PritchettC, ChandraT. Dermoid of the oral cavity: case report with histopathology correlation and review of literature. Radiology Case. 2016;10(12):19-27. [https://doi.org/10.3941/jrcr.v10i12.2995]. [PMID:28580062]
PuricelliE, BarreiroBOB, QuevedoAS, PonzoniD. Occurrence of dermoid cyst in the floor of the mouth: the importance of differential diagnosis in pediatric patients. J Appl Oral Sci. 2017;25(3):341-5. [https://doi.org/10.1590/1678-7757-2016-0411]. [PMID:28678954]
RamanathanM, BalasundharamS, ChristabelA, MuraliP, PandemS. simultaneous occurrence of a midline sublingual dermoid cyst with respiratory epithelium and submental dermoid cyst in a paediatric patient: a case report and review of literature. J Maxillofac Oral Surg. 2018;17(2):188-92. [https://doi.org/10.1007/s12663-016-0972-9]. [PMID:29618884]
GiarraputoL, SavastanoS, D’AmoreE, BacilieroU. Dermoid cyst of the floor of the mouth: diagnostic imaging findings. Cureus. 2018;10(4):e2403. [https://doi.org/10.7759/cureus.2403]. [PMID:29872584]