2017 Cilt 36 Sayı 1-2

Permanent URI for this collectionhttps://hdl.handle.net/11452/14438

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    Mandibular osteoma in a brown bear (ursus arctos)
    (Uludağ Üniversitesi, 2017-12-15) Aytuğ, Nilüfer; Cihan, Hüseyin; Özyiğit, M. Özgür; Uludağ Üniversitesi/Veteriner Fakültesi.
    A 21-year old, 150-kg male Brown bear, kept in Karacabey Bear Sanctuary in Bursa, Turkey, (Ursus Arctos) with an osteoma of the left mandible is presented. A large mass, causing significant facial asymmetry, on the mandible was detected. On palpation, the mandibular mass was very firm and immobile. Macroscopically the mass was non-hyperemic, spherical and smoothly contoured, whitish colored, hard and was 9 cm in diameter and covered by gingival mucosa. Microscopically, the tumoral mass on the mandible was covered with a layer of keratinized squamous epithelium. In deeper layers, bony islands of various shape and size were encountered. Some of them were compact, while some of them were trabecular. No mitotic figures were observed. The clinical and pathological findings were found compatible with osteoma.