title: Outcome of accelerated radiotherapy alone or accelerated radiotherapy followed by exenteration of the nasal cavity in dogs with intranasal neoplasia: 53 cases (1990-2002).
abstract: OBJECTIVE
  To compare long-term results of radiotherapy alone versus radiotherapy followed by exenteration of the nasal cavity in dogs with malignant intranasal neoplasia.
  
  
  METHODS
  Retrospective study.
  
  
  METHODS
  53 dogs with malignant intranasal neoplasia.
  
  
  METHODS
  All dogs underwent radiotherapy consisting of administration of 10 fractions of 4.2 Gy each on consecutive weekdays. For dogs in the surgery group (n=13), follow-up computed tomography was performed, and dogs were scheduled for surgery if persistent or recurrent tumor was seen.
  
  
  RESULTS
  Perioperative complications for dogs that underwent surgery included hemorrhage requiring transfusion (2 dogs) and subcutaneous emphysema (8). Rhinitis and osteomyelitis-osteonecrosis occurred significantly more frequently in dogs in the radiotherapy and surgery group (9 and 4 dogs, respectively) than in dogs in the radiotherapy-only group (4 and 3 dogs, respectively). Two- and 3-year survival rates were 44% and 24%, respectively, for dogs in the radiotherapy group and 69% and 58%, respectively, for dogs in the surgery group. Overall median survival time for dogs in the radiotherapy and surgery group (477 months) was significantly longer than time for dogs in the radiotherapy-only group (19.7 months).
  
  
  CONCLUSIONS
  Results suggest that exenteration of the nasal cavity significantly prolongs survival time in dogs with intranasal neoplasia that have undergone radiotherapy. Exenteration after radiotherapy may increase the risk of chronic complications.
authors.affiliation: Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI 53706, USA.
authors.forename: William M
authors.initials: WM
authors.lastname: Adams
authors.forename: Dale E
authors.initials: DE
authors.lastname: Bjorling
authors.forename: Jonathan E
authors.initials: JE
authors.lastname: McAnulty
authors.forename: Eric M
authors.initials: EM
authors.lastname: Green
authors.forename: Lisa J
authors.initials: LJ
authors.lastname: Forrest
authors.forename: David M
authors.initials: DM
authors.lastname: Vail
mesh_terms: D000818:Animals; D003131:Combined Modality Therapy / Q000662:veterinary; D004283:Dog Diseases / Q000532:radiotherapy* / Q000601:surgery*; D004285:Dogs; D005260:Female; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000662:veterinary; D009669:Nose Neoplasms / Q000532:radiotherapy / Q000601:surgery / Q000662:veterinary*; D011183:Postoperative Complications / Q000662:veterinary; D012189:Retrospective Studies; D016019:Survival Analysis; D014057:Tomography, X-Ray Computed / Q000662:veterinary; D016896:Treatment Outcome