[Diagnostic and therapeutic management of a big cyst at the floor of the mouth--a case report].
BACKGROUND
The growth of dysontogenetic cysts at the floor of the mouth is considered as a rare condition. Cysts of the floor of the mouth may be differentiated depending on location or on histopathologic-embryological criteria into dermoids, epidermoids and teratomas.


METHODS
We report a case of a large cyst at the floor of the mouth and present the results of clinical examination, preoperative diagnostics and surgical approach.


RESULTS
The tumour was resected by an enoral operation. Histological findings confirmed a large sublingual epidermoid cyst. There were no complication or relaps during postoperative course. The case is discussed within the framework of scientific literature.


CONCLUSIONS
Dysontogenetic cysts should be considered in differential diagnosis of tumours of the floor of the mouth. Diagnostic and surgical management depends first of all on size and location of dysontogenetic cysts.
Universitätsklinik für Hals-, Nasen- und Ohrenheilkunde und Poliklinik, Universitätsklinikum Freiburg. kinzer@hno.ukl.uni-freiburg.de
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D000328:Adult; D003937:Diagnosis, Differential; D004814:Epidermal Cyst / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D009059:Mouth Diseases / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D009060:Mouth Floor / Q000473:pathology / Q000601:surgery*