title: Prominent response with helical tomotherapy in recurrent ameloblastic carcinoma of maxillary sinus: a case report.
abstract: BACKGROUND
  Ameloblastoma is a benign but locally aggressive tumor of odontogenic epithelial tissue. Reports of radiotherapy treatment modalities are limited in the literature.
  
  
  METHODS
  A thirty-five year old male presented with complaints of headache radiating to his face for about six months and impaired vision. The patient's Positron Emission Tomography (PET) showed a mass in the left maxillary sinus extending to the nasal cavity and invading the adjacent tissues. An R2 (macroscopic residual tumor) surgical resection performed to debulk the tumor. Due to the recurrence and residual mass, the patient was treated with helical tomotherapy. At 2 months post-radiotherapy, patient's vision returned to normal. PET scan showed a significant reduction in lesion size 12 months post-radiation.
  
  
  CONCLUSIONS
  In cases of ameloblastic carcinoma with, post-surgical recurrence or patients not suitable for surgical treatment, helical tomotherapy can be an effective treatment option.
authors.affiliation: Department of Radiation Oncology, Regional Training and Research Hospital, Erzurum, Turkey. timurkoca3@gmail.com.
authors.forename: Timur
authors.initials: T
authors.lastname: Koca
authors.forename: Hamit
authors.initials: H
authors.lastname: Başaran
authors.forename: Deniz
authors.initials: D
authors.lastname: Arslan
authors.forename: Duygu
authors.initials: D
authors.lastname: Sezen
authors.forename: Zümrüt Arda
authors.initials: ZA
authors.lastname: Cerkeşli
authors.forename: Ozlem
authors.initials: O
authors.lastname: Kılınç
authors.forename: Sibel
authors.initials: S
authors.lastname: Karaca
authors.forename: Cumhur Ibrahim
authors.initials: CI
authors.lastname: Başsorgun
authors.forename: Hilmi Onder
authors.initials: HO
authors.lastname: Okay
authors.forename: Münir
authors.initials: M
authors.lastname: Demirci
mesh_terms: D000328:Adult; D000564:Ameloblastoma / Q000000981:diagnostic imaging / Q000473:pathology / Q000532:radiotherapy*; D006801:Humans; D008297:Male; D008444:Maxillary Sinus Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000532:radiotherapy*; D009364:Neoplasm Recurrence, Local / Q000000981:diagnostic imaging / Q000473:pathology / Q000532:radiotherapy*; D049268:Positron-Emission Tomography; D011379:Prognosis; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted; D050397:Radiotherapy, Intensity-Modulated