异位甲状腺是胚胎发育过程中,当甲状腺停留在移形途中的某一部位,则形成异位甲状腺.临床上异位于移行途中的咽、舌内、口底及颏下者多见,腮腺区罕见,下颌角区尚未见报道,本文报道右下颌角区异位甲状腺伴乳头状腺癌一例.苑某,男性,55岁,汉族,工人、患者5年 Ectopic thyroid is the process of embryonic development. When the thyroid stays in a certain part of the way, it forms an ectopic thyroid. Clinically, it is more common in the pharyngeal, lingual, floor of the mouth, and underarm in the middle of migration. The area is rare, and the mandibular angle has not been reported yet. This article reports a case of ectopic thyroid papillary adenocarcinoma in the right mandibular angle region. A court, male, 55 years old, Han nationality, workers, patients 5 years