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A case of transitional carcinoma in the nasal cavity of a dog
2008
Kang, H.J. (Cheju National University, Jeju, Republic of Korea) | Kang, S.C. (Chemon Inc., Yongin, Republic of Korea) | Jung, J.Y. (Cheju National University, Jeju, Republic of Korea) | Jo, S.H. (Cheju National University, Jeju, Republic of Korea) | Roh, I.S. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Lee, J.M. (Cheju National University, Jeju, Republic of Korea) | Cheong, J.T. (Cheju National University, Jeju, Republic of Korea) | Kim, J.H. (Cheju National University, Jeju, Republic of Korea) | An, M.C. (Halla Pet Hospital, Jeju, Republic of Korea) | Bae, J.H. (Cheju National University, Jeju, Republic of Korea) | Kim, J.H. (Cheju National University, Jeju, Republic of Korea), E-mail: kimjhoon@cheju.ac.kr
A 10-year-old female Yorkshire terrier with the clinical signs of nasal swelling, epistaxis and nasal discharge was presented to the Veterinary Teaching Hospital in the Cheju National University. Abnormal nasal mass detected in physical examination and radiographic findings. After surgical excision, the sample of nasal mass was referred to Pathology Department of Veterinary Medicine. Grossly, the mass was soft, friable, and 2.5 × 4 cm in size. Histopathologically, the mass was composed of medium-sized non-keratinizing columnar to polyhedral cells arranged in anastomosing ribbon and large nest. It has complex in-folding of thick epithelial layers separated by fibrovascular septa. Tumor cells showed characteristic palisading arrangement of columnar cells, and perpendicularly distributed to the basement membrane. The cells had pale basophilic cytoplasm, oval nucleus and one or more nucleoli, and indistinct cellular border. Many tumor cell emboli were presented in lymphatics. Immunohistochemistry revealed that tumor cells were cytokeratic (CK) 19 and CK clone MNF116 positive and but CK7 and CK high molecular weight negative. Based on the gross, histopathologic, and immunohistochemical findings, the mass was diagnosed as transitional carcinoma in nasal cavity. In our best knowledge, this is the first report of transitional carcinoma originated from transitional zone of canine nasal cavity in Korea.
显示更多 [+] 显示较少 [-]A case of granulomatous meningoencephalomyelitis in a dog
2008
Jung, J.Y. (Cheju National University, Jeju, Republic of Korea) | Jo, S.H. (Cheju National University, Jeju, Republic of Korea) | Kang, Y.H. (ShinJeju Animal Clinic, Jeju, Republic of Korea) | Kim, J.H. (Cheju National University, Jeju, Republic of Korea), E-mail: kimjhoon@cheju.ac.kr
Granulomatous meningoencephalomyelitis (GME) is a sporadic, idiopathic, non suppurative inflammatory disease of the canine central nervous system. GME appears to have a worldwide distribution and to occur mostly in young to middle-age dogs of small breeds. A 6-year-old female mixed dog with wry neck, ataxia and rolling was submitted to the Cheju National University for diagnosis. Grossly, in the brain, cerebrospinal fluid was mildly increased and dilatation of the subarachnoid blood vessels was observed. Histopathologically, the lesions were characterized by perivascular cuffs of lymphocytes, various numbers of macrophages and plasma cells in the brainstem and cerebral white matter. Numerous granuloma composed of lymphocytes and histiocytes were scattered throughout the brainstem. Two malacic foci characterized by axonal swelling and gitter cell infiltration with hemorrhage were noted in the medulla oblongata and cerebellum. Special stains failed to demonstrate any infectious agents. Immunohistochemically, the infiltrated cells demonstrated strong positive reactions for CD3, a marker for T lymphocytes origin. Based on the clinical signs, histopathology, and immunohistochemistry, this case was diagnosed as GME in a mixed dog.
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