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Journal of the American Animal Hospital Association 45:24-32 (2009)
© 2009 American Animal Hospital Association


Retrospective Study

An Expedited Palliative Radiation Protocol for Lytic or Proliferative Lesions of Appendicular Bone in Dogs

Heather M. Knapp-Hoch, MS, DVM, Janean Louise Fidel, DVM, Diplomate ACVR (Radiation Oncology), Diplomate ACVIM (Oncology), Rance K. Sellon, DVM, PhD, Diplomate ACVIM (Internal Medicine) and Patrick R. Gavin, DVM, PhD, Diplomate ACVR (Diagnostic, Radiation Oncology)

From the Department of Clinical Sciences (Knapp-Hoch), College of Veterinary Medicine, Cornell University, Ithaca, New York 14853 and the Department of Veterinary Clinical Sciences (Fidel, Sellon, Gavin), College of Veterinary Medicine, Washington State University, Pullman, Washington 99164-6610.

Address all correspondence to Dr. Fidel.

Fifty-eight dogs with lytic or proliferative bone lesions were treated with a radiation protocol of two 8-Gy fractions over 2 consecutive days. The protocol was well tolerated, with no increase in early or late effects over previously published protocols. Forty-three (91%) of 47 dogs responded positively to radiation, with a median time of 2 days to onset of pain relief. Median duration of pain relief was 67 days (range 12 to 503 days; mean 99±16 days). Median survival time for all dogs was 136 days (mean 179±18 days). Distal radial location was a positive prognostic indicator for survival (P=0.005).







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