Primary care physicians and endocrinologists should be aware that neck masses with concerning features like, in this case, a delay in evaluation and treatment may dramatically shorten a patient's life.
Keywords: anaplastic; cancer; fine‐needle aspiration; thyroid; undifferentiated.
Published 2020. This article is a U.S. Government work and is in the public domain in the USA. Clinical Case Reports published by John Wiley & Sons Ltd.