title: Lateral dermoid cyst of the floor of mouth: unusual radiologic and pathologic findings.
abstract: A lateral dermoid cyst is a rare lesion of the floor of mouth, with only 12 cases reported in the literature. We describe the case of a 60-year-old man with a slowly enlarging mass in the submandibular region. Magnetic resonance imaging demonstrated a lesion containing multiple uniformly rounded foci, creating a "sack-of-marbles" appearance. Needle aspirations showed atypical findings, and the mass was excised. Histopathology revealed a cyst containing a keratinizing stratified squamous epithelial lining with apocrine and eccrine glands. These findings were diagnostic of a dermoid cyst, which should be considered in the differential diagnosis of any midline or lateral cervical lesion.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Massachusetts Eye and Ear Infirmary, 243 Charles Street, Boston, MA 02114, USA. harrison_lin@meei.harvard.edu
authors.forename: Harrison W
authors.initials: HW
authors.lastname: Lin
authors.forename: Amanda L
authors.initials: AL
authors.lastname: Silver
authors.forename: Mary E
authors.initials: ME
authors.lastname: Cunnane
authors.forename: Peter M
authors.initials: PM
authors.lastname: Sadow
authors.forename: David A
authors.initials: DA
authors.lastname: Kieff
mesh_terms: D000369:Aged, 80 and over; D001707:Biopsy, Needle; D003287:Contrast Media; D003884:Dermoid Cyst / Q000175:diagnosis* / Q000601:surgery; D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009060:Mouth Floor; D009062:Mouth Neoplasms / Q000175:diagnosis* / Q000601:surgery; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media