title: A unique case of a sublingual-space schwannoma arising from the mylohyoid nerve.
abstract: We describe a unique case of a sublingual-space schwannoma presenting as a painless, 3 x 2-cm enlarging mass in the oral cavity of a 63-year-old man. Computed tomography demonstrated a distinct, well-encapsulated mass in the right side of the floor of the mouth. Findings on fine-needle aspiration cytology were consistent with a pleomorphic adenoma. Transoral excision was performed. Intraoperatively, the mass appeared to involve the nerve to the mylohyoid muscle. Upon removal, the gross tumor measured 4.4 x 3.5 x 2.5 cm. On microscopic examination, the spindle-cell neoplasm was found to be consistent with a schwannoma. Schwannomas of the sublingual space are exceedingly rare. Moreover, to the best of our knowledge, this case represents the first published occurrence of a schwannoma that arose from the mylohyoid nerve.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins School of Medicine, Baltimore, MD, USA.
authors.forename: Kavita Malhotra
authors.initials: KM
authors.lastname: Pattani
authors.forename: Kevin
authors.initials: K
authors.lastname: Dowden
authors.forename: Cherie-Ann O
authors.initials: CO
authors.lastname: Nathan
mesh_terms: D003287:Contrast Media; D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008334:Mandible; D008340:Mandibular Nerve / Q000473:pathology*; D008875:Middle Aged; D009060:Mouth Floor / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D009062:Mouth Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging; D009442:Neurilemmoma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media