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Multisite integumentary squamous cell carcinoma in an African grey parrot (Psittacus erithacus erithacus)

¹ Department of Small Animal Clinical Sciences, University of Tennessee, Knoxville, TN 37996, USA
² Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USA

A 22-year-old male African grey parrot (Psittacus erithacus erithacus) had had episodes of chronic feather picking and self-mutilation for 10 years; it had a 5 cm diameter right axillary wound and a 2 cm left dorsal patagial wound. Initial treatment with azithromycin and wound management was unsuccessful. Biopsies of both masses indicated squamous cell carcinoma. The left patagial tumour was removed completely by electrocautery. Cisplatin was administered weekly into multiple sites on the right axillary tumour and it initially appeared to regress; however, the bird's condition deteriorated after a month of treatment, and it was euthanased. The tumour was confirmed postmortem to be squamous cell carcinoma, which had invaded local tissues. The aetiology of the carcinoma may have been secondary to chronic focal trauma.