Table 1: Patient information of poor prognostic thyroid MEC ().

Age/sex (citation) Survive Accompanied tumor Recurrence Treatments 54/F [9] 13 mo PC anaplastic ca. Neck lymph nodes Operation XRT + Chem 66/F [10] 11 mo PC Neck Operation XRT + I + Chem 62/F [11] 10 mo PC anaplastic ca. Neck Operation Chem + I + XRT 57/M [12] 4 wk Anaplastic lesion 　 Chem 64/M [13] 3 mo PC tall cell variant NA Operation 83/F [13] 5 mo Anaplastic ca. NA Operation 52/M [14] 2 mo Variant type of PC 　 XRT + Chem

mo: months, wk: weeks, NA: not applicable, XRT: X-ray therapy, Chem: chemotherapy, I: 131iodine.