title: Medullary thyroid carcinoma metastatic to breast diagnosed by fine-needle aspiration biopsy.
abstract: We report a patient with a 22-yr history of medullary thyroid carcinoma in whom fine-needle aspiration biopsy of a breast mass, clinically suspected of being a primary mammary carcinoma, established the diagnosis of metastasis. This article demonstrates the importance of the use of immunocytochemical methods on fine-needle aspirates to diagnose metastases to the breast.
authors.affiliation: Departments of Pathology, University of Texas, M.D. Anderson Hospital and Tumor Institute, Houston 77030.
authors.forename: N G
authors.initials: NG
authors.lastname: Ordóñez
authors.forename: R L
authors.initials: RL
authors.lastname: Katz
authors.forename: M A
authors.initials: MA
authors.lastname: Luna
authors.forename: N A
authors.initials: NA
authors.lastname: Samaan
mesh_terms: D001707:Biopsy, Needle; D001943:Breast Neoplasms / Q000556:secondary*; D002277:Carcinoma / Q000473:pathology*; D002466:Cell Nucleolus / Q000473:pathology; D002843:Chromatin / Q000473:pathology; D003581:Cytodiagnosis; D003593:Cytoplasm / Q000473:pathology; D003594:Cytoplasmic Granules / Q000473:pathology; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D008198:Lymph Nodes / Q000473:pathology; D008875:Middle Aged; D013964:Thyroid Neoplasms / Q000473:pathology*
chemical_list: D002843:Chromatin