颏下甲状舌管囊肿,并囊肿旁甲状腺滤泡性腺癌,在临床上较少见,我科收治1例。患者杨某,男,18岁,于1985年3月4日因颏下肿物2年余而入院。两年前,患者无意中发现颏下似枣大小肿物, Subgingival thyroglossal duct cysts and cystic parathyroid follicular adenocarcinomas are rare in clinical practice. One case was treated in our department. The patient, Yang, male, 18 years old, was admitted to hospital on March 4, 1985 because of his armpit mass for more than two years. Two years ago, the patient inadvertently discovered a size tumor like a jujube in his armpit.