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Inflammatory Polyps in 2 Cats  

Ko, Seung-Bo (Collage of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University)
Jung, Ji-Youl (Collage of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University)
Kim, Jae-Hoon (Collage of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University)
Kang, Sang-Chul (Collage of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University)
Yoon, Jeong-Sik (Collage of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University)
Yang, Jung-Hwan (Seoul Animal Hospital)
Shin, Yong-Eun (Seoul Animal Hospital)
Kim, Jae-Hoon (Collage of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University)
Publication Information
Journal of Veterinary Clinics / v.27, no.5, 2010 , pp. 622-625 More about this Journal
Abstract
Inflammatory polyps in feline ear are nonneoplastic, inflammatory growths that arise from the middle ear or the eustachian tube and extended into the pharynx or external ear canal. Two 2-year-old female Russian blue cats showed 2-3 weeks history of aural discharge, crust formation in external ear, and head or ear shaking. Two masses were surgically excised from ear canal, and submitted for diagnosis. Histopathologically, these masses were covered with hyperplastic ciliated epithelium or nonkeratinizing squamous epithelium with partial erosion and ulceration. The core of masses was consisted of proliferated connective tissue and massive infiltration of mononuclear cells. Immunohistochemically, about 90% of infiltrated mononuclear cells demonstrated CD3 positive T cell. According to both polymerase chain reaction (PCR) and reverse transcriptase-PCR, tissues samples were negative for feline viral pathogens. Based on the clinical, gross, histopathologic findings, these two cases were diagnosed as inflammatory polyps originated from the middle ear in cats.
Keywords
cat; inflammatory polyp; middle ear; PCR; T cell;
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