Department of Pathology, Nitte University K S Hegde Medical Academy, Mangalore, Karnataka, India.
Department of Pathology, Nitte University K S Hegde Medical Academy, Mangalore, Karnataka, India
BMJ Case Rep. 2021 May 11;14(5):e241451. doi: 10.1136/bcr-2020-241451.
Lateral aberrant ectopic thyroid is very rare, comprising only 1%-3% of all the ectopic thyroid tissue. Clinically, these lesions are mistaken for lymph node swelling or metastatic tumour. Primary carcinoma in lateral aberrant ectopic thyroid with normal active native thyroid is very uncommon. We report a case of papillary carcinoma in lateral aberrant ectopic thyroid tissue, with a completely normal native thyroid gland in a 53-year-old man, who presented with a massive swelling in the lateral aspect of the neck clinically and radiologically diagnosed as a malignant soft tissue tumour with differential diagnosis of malignant lymphoma. Fine needle aspiration cytology revealed metastatic papillary carcinoma. In toto excision of the soft tissue mass along with subtotal thyroidectomy was performed. Histology of the mass revealed papillary carcinoma of lateral aberrant ectopic thyroid, while the thyroid gland did not show evidence of malignancy. The postsurgical period was uneventful, and the patient underwent radioiodine ablation.
侧方异位甲状腺非常罕见，仅占所有异位甲状腺组织的 1%-3%。临床上，这些病变被误诊为淋巴结肿大或转移性肿瘤。在正常活动的固有甲状腺正常的侧方异位甲状腺中，原发性癌非常罕见。我们报告了一例 53 岁男性患者的侧方异位甲状腺组织中的乳头状癌，该患者的固有甲状腺完全正常，临床上表现为颈部侧方巨大肿胀，放射学诊断为恶性软组织肿瘤，鉴别诊断为恶性淋巴瘤。细针穿刺细胞学显示转移性乳头状癌。我们对软组织肿块进行了整块切除，并进行了甲状腺次全切除术。肿块的组织学显示侧方异位甲状腺的乳头状癌，而甲状腺没有恶性的证据。术后情况良好，患者接受了放射性碘消融治疗。
