title: Simultaneous occurrence of medullary carcinoma and papillary carcinoma of the thyroid.
abstract: We report a case of simultaneous occurrence of medullary carcinoma and papillary carcinoma of the thyroid in the same thyroid gland. Immunoreactivity of calcitonin, carcinoembryonic antigen, neuron specific enolase and thyroglobulin made a sharp distinction between both neoplasms of the thyroid. It appears reasonable to consider that simultaneous occurrence of medullary carcinoma and papillary carcinoma of the thyroid in this case does not have embryological or genetical significance.
authors.affiliation: Second Department of Surgery, Faculty of Medicine, Tottori University, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Kobayashi
authors.forename: S
authors.initials: S
authors.lastname: Teramoto
authors.forename: H
authors.initials: H
authors.lastname: Maeta
authors.forename: S
authors.initials: S
authors.lastname: Ishiguro
authors.forename: T
authors.initials: T
authors.lastname: Mori
authors.forename: Y
authors.initials: Y
authors.lastname: Horie
mesh_terms: D018276:Carcinoma, Medullary / Q000473:pathology*; D002291:Carcinoma, Papillary / Q000473:pathology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary; D013964:Thyroid Neoplasms / Q000473:pathology*