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Open Access Radiation-Induced Glioblastoma Multiforme in Two Adult Baboons (Papio cynocephalus anubis)

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A diagnosis of glioblastoma multiforme (GBM) was made for cerebral masses found at necropsy in two baboons (Papio cynocephalus anubis). Case 1 was an adult (6.18 years old) male baboon that suddenly died during a physical examination as part of a clinical evaluation for a leg lameness. Case 2 was an adult (5.95 years old) female baboon that stopped breathing during anesthesia for an magnetic resonance imaging to evaluate lethargy, weight loss, inappetence, and dilated pupils. Both animals had undergone total body irradiation with cobalt during a research protocol. The incidence of spontaneous brain tumors in nonhuman primates is low, but radiation-induced GBM lesions in rhesus macaques (Macaca mulatta) have been reported. A definitive diagnosis was made in these cases, using histopathologic criteria of cellular pleomorphism, high mitotic rate, regions of coagulation necrosis, and endothelial proliferation.

Document Type: Case Report

Affiliations: 1: Washington National Primate Research Center, University of Washington 2: Clinical Research and Molecular Medicine Divisions, Fred Hutchison Cancer Research Center, Seattle, Washington, Department of Medicine, University of Washington School of Medicine, Seattle, Washington 3: Washington National Primate Research Center, University of Washington, Department of Comparative Medicine, University of Washington, Seattle, Washington

Publication date: June 1, 2004

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  • Comparative Medicine (CM), an international journal of comparative and experimental medicine, is the leading English-language publication in the field and is ranked by the Science Citation Index in the upper third of all scientific journals. The mission of CM is to disseminate high-quality, peer-reviewed information that expands biomedical knowledge and promotes human and animal health through the study of laboratory animal disease, animal models of disease, and basic biologic mechanisms related to disease in people and animals.

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