• Anaplastic thyroid carcinoma transformation in a lateral neck node metastasis - A case report and a review of the literature

      Gunnarsdottir, Agnes B; Briem, Birgir A; Jonasson, Larus; Tryggvason, Geir; [ 1 ] Skanes Univ Sjukhus Lund, Dept Otolaryngol & Head & Neck Canc, Lund, Sweden Show more [ 2 ] Landspitali Univ Hosp, Dept Otolaryngol Head & Neck Surg, IS-108 Reykjavik, Iceland Show more [ 3 ] Landspitali Univ Hosp, Dept Surg Pathol, Reykjavik, Iceland (Taylor & Francis, 2018)
      Anaplastic thyroid carcinoma is thought to be derived from previous existing papillary or follicular thyroid carcinoma that dedifferentiates into its anaplastic counterpart. We present a case where this type of dedifferentiation occurs at a metastatic site in a regional lymph node, years after the primary papillary thyroid tumor had metastasized.