adenocarcinoma poorly differentiated thyroid gland carcinoma thyroid gland poorly differentiated carcinoma poorly differentiated carcinoma of the thyroid gland poorly differentiated thyroid cancer insular carcinoma poorly differentiated thyroid carcinoma DOID:3972 poorly differentiated thyroid gland cancer icd11.foundation:1227619262 poorly differentiated carcinoma of thyroid gland NCIT:C6040 UMLS:C1266050 ICDO:8337/3 EFO:1000489 MONDO:0006382 poorly differentiated thyroid gland carcinoma MEDGEN:266094 An adenocarcinoma arising from the thyroid gland showing only limited evidence of follicular cell differentiation. Microscopically, the adenocarcinoma cells are arranged in insular, solid, and trabecular patterns. There is associated necrosis, and vascular invasion. The prognosis depends on the tumor stage, complete or partial surgical removal of the tumor, and the degree of response to radioactive iodine therapy (adapted from WHO Tumors of Endocrine Organs, IARC Press, Lyon 2004) ONCOTREE:THPD