A 9-year-old, spayed/female DSH cat was presented for evaluation of an intraoral mass of the left rostral mandible. Upon noticing the mass, the owner immediately brought the cat to the emergency service. The mandibular left canine tooth had been notedto be missing approximately 2-months earlier. Physical examination was normal except for abnormalities seen in the oral cavity and bilateral enlargement of the mandibular lymph nodes. The patient was fractious, preventing a complete oral examination. Preanesthetic laboratory tests including a chemistry panel and complete blood count were within normal limits. The patient was premedicated with a combination intramuscular injection of hydromorphone (0.05mg/kg), midazolam (0.5mg/kg), ketamine (6.0mg/kg) and atropine (0.02mg/kg). A 20-gauge intravenous catheter was placed and an isotonic balanced electrolyte solution (10 ml/kg/hr IV) was administered. Profound sedation was obtained from the premedication enabling intubation. Oxygen was delivered via maskprior to intubation and isoflurane was delivered once a cuffed endotracheal tube was placed. Thoracic radiographs (3-view) were obtained after induction of anesthesia due to the fractious nature of the patient. These radiographs showed no signs of metastatic disease. Oral examination revealed a missing mandibular left canine tooth (304), and a 9 x 9 x 10-mm erythematous mass present at the area of the missing canine (Fig. 1). The surf ace of the mass was ulcerated and hemorrhagic. The mandibular left third premolar tooth (307) was also missing, with a smooth gingival bulge present indicative of previous resorption. The maxillary second premolar (106,206) teeth, mandibular left fourth premolar (308), and the mandibular right third premolar (407) teeth exhibited signs of dental resorptive lesions (RL) at the gingival margin, with hyperplastic gingiva present at the cervical defects of these teeth. Full-mouth radiographs were obtained and revealed Stage 5, Type II root replacement resorption of teeth .304 and 307 (Fig, 1). Stage 4, Type II RLs were present radiographically affecting teeth 106,206, 308, and 407.
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机译：提出了一个9岁，雌性/雌性的DSH猫，以评估左喙下颌的口腔内质量。主人注意到后，主人立即将猫带到紧急服务处。已注意到下颌左犬齿大约早两个月缺失。体格检查正常，除了口腔异常和下颌淋巴结双侧肿大。病人不舒服，无法进行全面的口腔检查。麻醉前的实验室检查包括化学检查和全血细胞计数均在正常范围内。用氢吗啡酮（0.05mg / kg），咪达唑仑（0.5mg / kg），氯胺酮（6.0mg / kg）和阿托品（0.02mg / kg）的组合肌内注射对该患者进行了药物治疗。放置20规格的静脉内导管，并使用等渗的平衡电解质溶液（10 ml / kg / hr IV）。从能进行插管的药物前治疗中获得了深刻的镇静作用。插管前通过面罩输送氧气，放置袖带气管导管后输送异氟烷。由于患者的易碎性，在麻醉诱导后获得了胸片（3片）。这些射线照片没有显示转移性疾病的迹象。口腔检查发现缺失的下颌左犬齿（304），并且在缺失的犬齿区域存在9 x 9 x 10 mm的红斑块（图1）。肿块表面溃疡并出血。下颌左第三前磨牙（307）也缺失，存在光滑的牙龈隆起，表明以前的吸收。上颌第二前磨牙（106,206）牙齿，下颌左第四前磨牙（308）和下颌右第三前磨牙（407）牙齿在牙龈边缘显示牙吸收性损伤（RL）的迹象，增生性牙龈存在于以下牙髓这些牙齿。获得了全口射线照相，并显示了第5阶段II.0.3和307牙齿的根置换吸收（图1）。影像学上影响牙齿106,206、308和407的第4期II型RLs。
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