患儿,女,6岁,因高热伴咽痛9天入院。9天前无明显诱因高热,咽痛,第2天右颌下淋巴结肿大,初为拇指大小,压痛,逐渐发展为双侧颌下,并逐渐增大,表面皮肤不红,用过多种抗生素治疗无效,体温不降。发热第9天颈在前后活动时,疼痛难忍,拟诊为咽后壁脓肿,行X线摄影,发现寰椎向前脱位(图1)。乃入院治疗。发病 Children, female, 6 years old, admitted to hospital with fever and sore throat for 9 days. 9 days ago, no obvious incentive for fever, sore throat, right submandibular lymph nodes on the 2nd day, the beginning of the thumb size, tenderness, and gradually developed into bilateral submandibular and gradually increased, the surface of the skin is not red, used a variety of Antibiotic treatment is invalid, body temperature does not drop. On the 9th day of fever, the neck was anteroposterior and the pain was unbearable. It was proposed as an abscess of posterior pharyngeal wall. X-ray photography was performed and the anterior atlas was dislocated (Fig. 1). Is admitted to hospital. Disease