What are the multimode sonographic features of adenoid cystic carcinoma metastasized to the thyroid?  

作　　者：Hai-Na Zhao Bu-Yun Ma 

机构地区：[1]Department of Ultrasonography,West China Hospital of Sichuan University,Chengdu,Sichuan 610000,China

出　　处：《Chinese Medical Journal》2019年第2期247-249,共3页中华医学杂志（英文版）

摘　　要：To the Editor:Adenoid cystic carcinoma (ACC) is a rare tumor, accounting for approximately 1% of all head and neck malignant neoplasms.[1] ACC typically arises in the major and minor salivary glands.Despite poor growth, frequent local recurrence and late distant metastasis have been reported.The organs most frequently involved include the lungs, bones, brain, and liver,[2] whereas metastasis to the thyroid is relatively rare.Herein, we reported a case of metastasis to the bilateral thyroid lobe in a 42-year-old woman with ACC of the submaxillary gland that was excised 2 years ago.The main aim of the present case was to focus on the ultrasonic and elastography features of thyroid metastasis from ACC when ultrasonography is the first means to diagnose a thyroid nodule.

关 键 词：ADENOID CYSTIC accounting SALIVARY GLANDS 

分 类 号：R[医药卫生]