title: Metastasis to the breast from an adenocarcinoma of the colon.
abstract: Metastases to the breast from extramammary malignancies are rare. We report a case of metastasis to the breast from a colonic adenocarcinoma in a 50-year-old man who was 6 years status after a right hemicolectomy for T3N1M1 adenocarcinoma of the ascending colon. Sonographic evaluation of the right breast lump showed a hypoechoic mass with slightly irregular margins, but there was no internal vascularity. Chest CT also documented a poorly enhancing suspicious mass in the right breast. The diagnosis of adenocarcinoma metastasis to the breast was achieved with sonographically guided core biopsy.
authors.affiliation: Department of Diagnostic Imaging, The National University Hospital of Singapore, Singapore.
authors.forename: Yvonne Y
authors.initials: YY
authors.lastname: Ho
authors.forename: Wai-Kit
authors.initials: WK
authors.lastname: Lee
mesh_terms: D000230:Adenocarcinoma / Q000556:secondary* / Q000601:surgery; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D001707:Biopsy, Needle; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000188:drug therapy / Q000473:pathology / Q000556:secondary*; D003082:Colectomy / Q000379:methods; D003110:Colonic Neoplasms / Q000473:pathology* / Q000601:surgery; D005500:Follow-Up Studies; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D035583:Rare Diseases; D018570:Risk Assessment; D016896:Treatment Outcome; D018615:Ultrasonography, Doppler, Color; D016217:Ultrasonography, Mammary / Q000379:methods*