Liu Shiyang, Wang Wanju, Zhao Lu, Wang Kun, Xu Jing, Jiao Bo, Liu Chenguang, Zhang Lin
Department of Thyroid and Breast Surgery, Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China.
Department of Thyroid and Breast Surgery, Hubei Provincial Hospital of Integrated Chinese and Western Medicine, Wuhan, Hubei, China.
J Int Med Res. 2020 Nov;48(11):300060520971435. doi: 10.1177/0300060520971435.
Intratracheal ectopic thyroid (ITET) is a rare disease, with limited cases reported in the literature. ITET is an unusual congenital abnormality and can be easily mistaken for a respiratory illness. We present a case of a 61-year-old man with a history of slight discontinuous hemoptysis for 2 years. A tracheal mass, which appeared to be connected to the left thyroid gland, was found by chest computed tomography scan. Ultrasound revealed one suspiciously malignant, solid and hypoechoic nodule in the left thyroid gland. After the thyroid origin of the mass was confirmed by bronchoscopic biopsy, the patient underwent segmental resection and anastomosis of the trachea, together with left thyroidectomy. Histopathology of the tracheal tumor showed adenomatous hyperplastic ITET, and the orthotopic left thyroid gland showed nodular goiter with atypical adenomatous hyperplasia. Clinical suspicion is warranted in patients presenting with a tracheal tumor seemingly connected to the thyroid gland, particularly in patients who have imaging features suggestive of a malignant tumor in the orthotopic thyroid but without confirmative histopathology of malignancy before surgery.
气管内异位甲状腺（ITET）是一种罕见疾病，文献报道的病例有限。ITET是一种不寻常的先天性异常，很容易被误诊为呼吸系统疾病。我们报告一例61岁男性，有2年轻微间断咯血病史。胸部计算机断层扫描发现一个气管肿物，似乎与左侧甲状腺相连。超声显示左侧甲状腺有一个可疑恶性的实性低回声结节。经支气管镜活检证实肿物起源于甲状腺后，患者接受了气管节段切除及吻合术，同时行左侧甲状腺切除术。气管肿瘤的组织病理学显示为腺瘤样增生性ITET，原位左侧甲状腺显示为结节性甲状腺肿伴非典型腺瘤样增生。对于出现似乎与甲状腺相连的气管肿瘤的患者，尤其是那些原位甲状腺有提示恶性肿瘤的影像学特征但术前未得到恶性肿瘤确诊性组织病理学结果的患者，临床应保持怀疑。
