Sarcoma developing in association with a metallic orthopedic procedure is an uncommon but well-recognized complication in mammals. We report on a synovial sarcoma that developed at the site of an intramedullary pin after surgery to treat a bone fracture. A 17-year-old female peach-faced lovebird (Agapornis roseicollis) developed a spherical mass on the distal right dorsal wing at a site that was previously fractured and surgically repaired with an indwelling intramedullary pin. The right wing was amputated at the scapulohumeral joint. One year later, the bird died. Postmortem examination revealed metastases in the right lung, left thoracic wall, and proventricular serosa. Histologically, the tumor had a characteristic biphasic pattern. The tumor was immunohistologically and ultrastructurally identified as a synovial sarcoma. This is the first report of a suspected fracture-associated sarcoma in a bird.
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1 March 2016
Synovial Sarcoma Associated With Indwelling Intramedullary Pin in a Peach-Faced Lovebird (Agapornis roseicollis)
Yumiko Nakano,
Yumi Une
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Agapornis roseicollis
air sac metastasis
Avian
fracture-associated sarcoma
intramedullary pin
lovebird
synovial sarcoma