title: Thyroid metastasis from breast cancer presenting with diffuse microcalcifications on sonography: a case report.
abstract: Microcalcifications are frequently associated with papillary thyroid cancers. Metastatic nodules from extrathyroid malignancies may mimic primary thyroid neoplasm on sonography, but do not present with microcalcifications. We report the case of a 45-year-old woman with a history of invasive ductal carcinomas of bilateral breasts, status post surgery and neoadjuvant chemotherapy. Four years after surgery, thyroid sonography revealed diffuse microcalcifications without nodular component. Core needle biopsy confirmed thyroid metastasis from primary breast cancer.
authors.affiliation: Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan; National Yang Ming University, School of Medicine, Taipei, Taiwan.
authors.forename: Yi-Pei
authors.initials: YP
authors.lastname: Liu
authors.forename: Chui-Mei
authors.initials: CM
authors.lastname: Tiu
authors.forename: Yi-Hong
authors.initials: YH
authors.lastname: Chou
authors.forename: Chih-Yi
authors.initials: CY
authors.lastname: Hsu
authors.forename: Kuang-Liang
authors.initials: KL
authors.lastname: King
authors.forename: Yi-Chen
authors.initials: YC
authors.lastname: Lai
authors.forename: Hsin-Kai
authors.initials: HK
authors.lastname: Wang
authors.forename: Hong-Jen
authors.initials: HJ
authors.lastname: Chiou
authors.forename: Cheng-Yen
authors.initials: CY
authors.lastname: Chang
mesh_terms: D001706:Biopsy; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D002114:Calcinosis / Q000000981:diagnostic imaging*; D002285:Carcinoma, Intraductal, Noninfiltrating / Q000000981:diagnostic imaging* / Q000556:secondary; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008875:Middle Aged; D013961:Thyroid Gland / Q000000981:diagnostic imaging* / Q000473:pathology; D013964:Thyroid Neoplasms / Q000000981:diagnostic imaging* / Q000556:secondary; D014463:Ultrasonography
keywords: breast cancer; microcalcifications; sonography; thyroid gland; thyroid metastasis