Case 1
Papillary carcinoma

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Case 2
Columnar cell carcinoma

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Case 3
Medullary carcinoma, papillary (pseudopapillary) variant Special stains (not included): calcitonin, chromogranin, CEA: positive thyroglobulin: negative

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Case 4
Hyalinizing trabecular adenoma

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Case 5
Follicular carcinoma (with focal Hurthle cell features), minimally invasive type

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Case 6
Papillary carcinoma, encapsulated follicular variant

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Case 7
Poorly differentiated (insular) carcinoma Special stains (not included): Thyroglobulin: positive, especially in the microfollicles calcitonin, chromogranin: negative

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Case 8
Medullary carcinoma, classical type Special stains (not included): cytokeratin, calcitonin, CEA, chromogranin: positive Thyroglobulin: negative

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Case 9
Anaplastic (squamous cell) carcinoma, arising from a preexisting Hurthle cell neoplasm Special stains (not included): cytokeratin: positive (including a proportion of spindly cells) thyroglobulin: negative (positive in the Hurthle cell tumor portion) cal

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Case 10
Medullary carcinoma, spindle cell variant Special stains (not included): cytokeratin, calcitonin, CEA, chromogranin, synaptophysin: positive thyroglobulin: negative

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Case 11
Spindle epithelial tumor with thymus-like element (SETTLE) Special stains (not included): cytokeratin: positive in epithelial cells and some spindly cells actin: some spindly cells positive thyroglobulin, calcitonin, CEA, chromogranin, S100: negative

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Case 12
Anaplastic carcinoma, paucicellular variant Special stains (not included): cytokeratin, EMA: positive thyroglobulin: negative

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Case 13
Solitary fibrous tumor Special stains (not included): vimentin, CD34: positive cytokeratin, S100, actin, desmin: negative

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Case 14
Low grade B-cell lymphoma of mucosa-associated lymphoid tissue (MALT) [extranodal marginal zone B cell lymphoma] with increased large cells, arising in a backgroun of Hashimoto's thyroiditis. Special stains (not included): L26 (CD20), lambda light chain:

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Case 15
Papillary carcinoma. diffuse sclerosing variant

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List All the 24 cases in this seminar