title: Salivary duct carcinoma in the mandible: a case report.
abstract: Salivary duct carcinoma (SDC) is a distinctive and aggressive neoplasm. The most frequent site of origin is the parotid gland, followed by the submandibular gland. SDC originating in the minor salivary glands, particularly in the ectopic glands within the mandible, is extremely rare. We describe a 62-year-old man with SDC in the mandible, who presented with a painless lump in the right submandibular region (later identified as lymph node metastasis) and ipsilateral mental nerve palsy. Histologic examination after ablative surgery revealed SDC originating in the mandible and cervical nodal metastases spreading to levels I-III. The patient remains alive 59 months after presentation as a result of postoperative full-dose irradiation and regular intensive chemotherapy using TXT, 5-FU, and CDDP. However, the patient has local recurrence and distant metastases to the lung and brain. In this report, we also discuss the specific diagnostic criteria and developmental theories of intraosseous salivary gland tumors.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama City 236-0004, Japan. ompyk@hotmail.com
authors.forename: Yoshinao
authors.initials: Y
authors.lastname: Kikuchi
authors.forename: Makoto
authors.initials: M
authors.lastname: Hirota
authors.forename: Toshinori
authors.initials: T
authors.lastname: Iwai
authors.forename: Shinjiro
authors.initials: S
authors.lastname: Aoki
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Chikumaru
authors.forename: Ryoichi
authors.initials: R
authors.lastname: Kawabe
authors.forename: Yoshiro
authors.initials: Y
authors.lastname: Matsui
mesh_terms: D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D017024:Chemotherapy, Adjuvant; D006801:Humans; D008297:Male; D008339:Mandibular Neoplasms / Q000188:drug therapy / Q000473:pathology* / Q000556:secondary / Q000601:surgery; D008875:Middle Aged; D018987:Salivary Ducts / Q000473:pathology*; D012468:Salivary Gland Neoplasms / Q000188:drug therapy / Q000473:pathology* / Q000556:secondary / Q000601:surgery