External Beam Radiation Therapy of Squamous Cell Carcinoma in the Beak of an African Grey Parrot (Psittacus timneh)
| Autor: | Jeremy R. Tobias, Kathryn L. Phillips, Tracy L. Gieger, John M. Cullen, Vanessa L. Grunkemeyer, Samantha D. Swisher |
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| Rok vydání: | 2016 |
| Předmět: |
Male
Pathology medicine.medical_specialty 040301 veterinary sciences Grey parrot Radiography medicine.medical_treatment Metastasis 0403 veterinary science Lesion Parrots medicine Animals Small Animals Bird Diseases biology business.industry Beak 0402 animal and dairy science Granulation tissue 04 agricultural and veterinary sciences General Medicine biology.organism_classification Debulking medicine.disease 040201 dairy & animal science Radiation therapy medicine.anatomical_structure Carcinoma Squamous Cell medicine.symptom business |
| Zdroj: | Journal of Avian Medicine and Surgery. 30:250-256 |
| ISSN: | 1938-2871 1082-6742 |
| DOI: | 10.1647/2015-106 |
| Popis: | Squamous cell carcinoma has been reported in a variety of bird species, most commonly psittacine and gallinaceous birds. The long-term prognosis in nongallinaceous birds is generally poor if complete surgical excision is not possible. Squamous cell carcinoma of the rhinotheca was diagnosed in a 34-year-old timneh African grey parrot (Psittacus timneh) with a 2-year history of beak abnormalities. No evidence of metastasis or local invasion were found on results of radiographs or computed tomography scan. The bird was treated with surgical debulking and palliative megavoltage radiation therapy. After 4 radiation treatments, the affected tissue was necrotic and was debrided to reveal healthy granulation tissue. The bird died approximately 7 months after diagnosis and 4 months after cessation of radiation treatment. At the time of death, a small scab lesion remained at the left oral commissure, but no visible tumor regrowth was evident. A postmortem examination was not performed, however, and tumor recurrence could not be ruled out in this bird. |
| Databáze: | OpenAIRE |
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