1. Nel CJ, van Heerden JA, Goellner JR, et al. Anaplastic carcinoma of the thyroid: a clinicopathologic study of 82 cases. Mayo Clin Proc 1985; 60:51–58.
2. Rosai J, Saxén EA, Woolner L. Session III: Undifferentiated and poorly differentiated carcinoma. Semin Diag Pathol 1985; 2:123–136.
3. Rosai J, Carcangiu ML, DeLellis RA. Tumors of the thyroid gland Rosai J, editor. Atlas of Tumor Pathology, Washington, DC: Armed Forces Institute of Pathology; 1992.
4. Wiseman SM, Loree TR, Rigual NR, et al. Anaplastic transformation of thyroid cancer: review of clinical, pathologic, and molecular evidence provides new insights into disease biology and future therapy. Head Neck 2003; 25:662–670.
5. Akslen LA, Haldorsen T, Thoresen SO, Glattre E. Incidence of thyroid cancer in Norway 1970–1985. APMIS 1990; 98:549–558.