Department of Clinical Sciences, Kansas State University, College of Veterinary Medicine, Manhattan, KS, USA.
Evolution Veterinary Specialists, Lakewood, CO, USA.
J Vet Dent. 2024 Sep;41(5):404-408. doi: 10.1177/08987564231184112. Epub 2023 Jun 20.
A 14-year-old male intact Malayan tiger () was presented for a routine annual wellness exam and comprehensive oral health assessment and treatment, during which an odontogenic cyst was incidentally diagnosed from radiographs. Prior to a second immobilization for computed tomography (CT) and surgical removal of the cyst, the tiger developed anorexia, lethargy, and reluctance to train, which were clinical signs suspected to be reflective of pain secondary to the odontogenic cyst. A CT scan of the skull revealed 2 odontogenic cyst lesions associated with teeth 204-207 and 208-209, and associated tooth root resorption, focal lysis of the maxilla, communication with the left nasal passage, thinning of the ventral margin of the left orbit and maxillary foramen, and left mandibular lymphadenopathy. Complete enucleation of each cyst wall and surgical extraction of associated teeth were performed. Histopathologic findings were consistent with an odontogenic cyst containing keratinized stratified squamous epithelium, keratin debris within the cyst lumen, and a lymphoplasmacytic inflammatory infiltrate. Postoperatively, the tiger recovered uneventfully, clinical signs resolved within 2 weeks and have not recurred at the time of publication of this article. Similar keratinized odontogenic cysts are described in dogs, and there is only one other case report in a felid. This is the first known report of an odontogenic cyst in a tiger and of a keratinized odontogenic cyst in a nondomestic species.
一只 14 岁的雄性马来亚虎（）前来进行例行年度健康检查和全面口腔健康评估与治疗，在此期间，通过 X 光片偶然诊断出一颗牙源性囊肿。在第二次进行全身麻醉以进行计算机断层扫描（CT）和手术切除囊肿之前，老虎出现了食欲不振、嗜睡和不愿训练的情况，这些临床症状被怀疑是继发于牙源性囊肿的疼痛。头颅 CT 扫描显示有 2 个牙源性囊肿病变与牙齿 204-207 和 208-209 相关，并且与牙齿根部吸收、上颌局灶性溶解、与左侧鼻腔相通、左侧眶底和上颌骨孔变薄以及左下颌淋巴结病有关。对每个囊肿壁进行了完全的剜除，并对相关牙齿进行了手术拔除。组织病理学检查结果与包含角化复层鳞状上皮的牙源性囊肿一致，囊腔内有角蛋白碎屑和淋巴浆细胞炎症浸润。手术后，老虎恢复顺利，2 周内临床症状消失，在本文发表时未再复发。在犬中也有类似的角化牙源性囊肿的描述，而在猫中只有另一个病例报告。这是首次在老虎中报告牙源性囊肿，也是首例在非家养物种中报告角化牙源性囊肿。
