Sreedharanunni Sreejesh, Vidyadharan Geeta, Jojo Annie
Department of Pathology, Amrita Institute of Medical Sciences, Kochi, Kerala, India.
J Cytol. 2014 Apr;31(2):108-10. doi: 10.4103/0970-9371.138687.
Intrathyroidal metastasis and direct extension of extrathyroidal malignancies can present with palpable thyroid nodules or may be detected as suspicious nodules in a thyroid scan. They can lead to diagnostic difficulty in fine needle aspiration cytology (FNAC) of the thyroid, especially in the absence of any previous history of such malignancies. Here we report an interesting case of intrathyroidal metastasis, which was initially suspected as a primary carcinoma of the thyroid; along with a short summary of a series of 11 cases of carcinomas of extrathyroidal origin, diagnosed in the FNACs of thyroid over the past three years in our institute. Knowledge of the potential diagnostic pitfalls in thyroid FNAC, a proper clinical evaluation, and judicious use of the ancillary techniques will help to attain a proper diagnosis.
甲状腺内转移及甲状腺外恶性肿瘤的直接蔓延可表现为可触及的甲状腺结节，或在甲状腺扫描中被检测为可疑结节。它们可导致甲状腺细针穿刺抽吸活检（FNAC）诊断困难，尤其是在没有此类恶性肿瘤既往史的情况下。在此，我们报告一例有趣的甲状腺内转移病例，该病例最初被怀疑为原发性甲状腺癌；同时简要总结了我院过去三年在甲状腺FNAC中诊断出的11例甲状腺外源性癌病例。了解甲状腺FNAC中潜在的诊断陷阱、进行恰当的临床评估并明智地使用辅助技术将有助于做出正确诊断。
