title: Treatment of ameloblastoma and ameloblastic carcinoma with radiotherapy.
abstract: The purpose of this study is to report our institutional experience using radiotherapy in the treatment of ameloblastoma and ameloblastic carcinoma. Three patients with ameloblastoma and 3 patients with ameloblastic carcinoma were treated with radiotherapy alone (2 patients) or surgery and postoperative radiotherapy (4 patients) at the University of Florida between 1973 and 2007. Follow-up ranged from 4.0 to 13.1 years with a median of 7.8 years. Radiotherapy complications were scored using the Common Terminology Criteria for Adverse Events, version 4.0. Local control was achieved in 4 of the 6 patients. One patient treated with RT alone for an unresectable ameloblastoma developed a local recurrence and metastases in both the cervical lymph nodes and lungs, but had excellent response to dual BRAF/MEK inhibition with dabrafenib and trametinib. Another patient treated with surgery and postoperative radiotherapy for an ameloblastic carcinoma recurred locally without metastasis, but was not salvaged. No significant treatment-related complications were observed. For patients with local recurrence or inadequate margins after surgery, adjuvant radiotherapy provides the potential for disease control. In the setting of metastatic disease, targeted therapies may provide an additional opportunity for salvage.
authors.affiliation: Department of Radiation Oncology, University of Florida College of Medicine, 2000 SW Archer Rd., PO Box 100385, Gainesville, FL, 32610-0385, USA.
authors.forename: William R
authors.initials: WR
authors.lastname: Kennedy
authors.affiliation: Department of Otolaryngology, University of Florida College of Medicine, Gainesville, FL, USA.
authors.forename: John W
authors.initials: JW
authors.lastname: Werning
authors.affiliation: Department of Medicine, University of Florida College of Medicine, Gainesville, FL, USA.
authors.forename: Frederic J
authors.initials: FJ
authors.lastname: Kaye
authors.affiliation: Department of Radiation Oncology, University of Florida College of Medicine, 2000 SW Archer Rd., PO Box 100385, Gainesville, FL, 32610-0385, USA. mendwm@shands.ufl.edu.
authors.forename: William M
authors.initials: WM
authors.lastname: Mendenhall
mesh_terms: D000328:Adult; D000368:Aged; D000564:Ameloblastoma / Q000473:pathology / Q000628:therapy; D000970:Antineoplastic Agents / Q000008:administration & dosage; D002294:Carcinoma, Squamous Cell / Q000473:pathology / Q000628:therapy; D003131:Combined Modality Therapy; D005260:Female; D006258:Head and Neck Neoplasms / Q000473:pathology / Q000628:therapy; D006801:Humans; D007093:Imidazoles / Q000008:administration & dosage*; D000069451:Long Term Adverse Effects / Q000175:diagnosis / Q000209:etiology; D008297:Male; D008875:Middle Aged; D037981:Neck Dissection / Q000009:adverse effects / Q000379:methods; D009364:Neoplasm Recurrence, Local; D010043:Outcome and Process Assessment, Health Care; D010091:Oximes / Q000008:administration & dosage*; D011728:Pyridones / Q000008:administration & dosage*; D011744:Pyrimidinones / Q000008:administration & dosage*; D018714:Radiotherapy, Adjuvant / Q000009:adverse effects / Q000379:methods
chemical_list: D000970:Antineoplastic Agents; D007093:Imidazoles; D010091:Oximes; D011728:Pyridones; D011744:Pyrimidinones; C560077:trametinib; C561627:dabrafenib
keywords: Head and neck; Outcomes; Radiation therapy