孤立性颈部颏下结节在临床上比较罕见，容易漏诊，同时需要与头颈部的各种疾病作鉴别诊断。本文对民航上海医院上海交通大学医学院附属瑞金古北分院外科收治的1例甲状腺乳头状癌颏下孤立转移病人进行报道。病人因“自觉颏下结节较前增大”就诊。超声检查提示甲状腺和颏下均有可疑病灶。超声引导下细针穿刺活检结果提示恶性。手术切除及中央区淋巴结清扫后，病理结果确诊为甲状腺乳头状癌伴颏下孤立性转移。本文对该病例的临床诊疗经过进行报道，以期提高临床医师对该疾病的认识，避免漏诊，同时也要与其他颈部罕见疾病作鉴别诊断。

Solitary cervical submental nodule is a relatively rare case in clinical procedure and prone to miss diagnosis. Differential diagnosis with various head and neck diseases is necessary. This article reported a case of solitary cervical submental metastasis of papillary thyroid carcinoma received in the department of surgery, Civil Aviation Shanghai Hospital, Ruijin Gubei Branch, Shanghai Jiao Tong University School of Medicine. The patient came to the outpatient clinic for treatment due to "consciously larger submental tubercle than before". Ultrasound examination revealed suspicious lesions in both the thyroid and submental regions. Ultrasound-guided final needle aspiration biopsy diagnosed as malignant tumor. Surgical resection was performed and the central group lymph nodes dissected Pathological examination confirmed papillary thyroid carcinoma with solitary submental metastasis. This article reported the clinical diagnosis and treatment of this case, in order to improve the disease recognition for clinicians, and make differential diagnosis with other rare neck diseases, and avoid missing diagnoses.