title: Squamous cell carcinoma associated with tall cell variant of papillary carcinoma of the thyroid.
abstract: We report the simultaneous occurrence of the tall cell variant of papillary carcinoma and squamous cell carcinoma in the thyroid gland. Histology and immunohistochemical findings are discussed and it seems that the malignant squamous component was transformed from the tall cell variant of papillary carcinoma. Metastasis from the squamous cell carcinoma is diagnosed in the regional lymph node.
authors.affiliation: Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: M J
authors.initials: MJ
authors.lastname: Ashraf
authors.forename: N
authors.initials: N
authors.lastname: Azarpira
authors.forename: B
authors.initials: B
authors.lastname: Khademi
authors.forename: M
authors.initials: M
authors.lastname: Peiravi
mesh_terms: D000368:Aged; D002116:Calcitonin / Q000032:analysis; D002291:Carcinoma, Papillary / Q000150:complications* / Q000175:diagnosis* / Q000473:pathology; D002294:Carcinoma, Squamous Cell / Q000150:complications* / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006651:Histocytochemistry; D006801:Humans; D007150:Immunohistochemistry; D019394:Ki-67 Antigen / Q000032:analysis; D008198:Lymph Nodes / Q000473:pathology; D008207:Lymphatic Metastasis / Q000175:diagnosis / Q000473:pathology; D008853:Microscopy; D013954:Thyroglobulin / Q000032:analysis; D013961:Thyroid Gland / Q000473:pathology*; D013964:Thyroid Neoplasms / Q000175:diagnosis* / Q000473:pathology*
chemical_list: D019394:Ki-67 Antigen; D002116:Calcitonin; D013954:Thyroglobulin