title: Invasive ductal breast cancer metastatic to the sigmoid colon.
abstract: The most common sites of breast cancer metastasis are the bone, lung, liver and brain. However, colonic metastases from breast cancer are very rare in the clinic. We describe an unusual case of sigmoid colonic metastasis from invasive ductal breast cancer. With this report, we should increase the clinical awareness that any patient with a colorectal lesion and a history of malignancy should be considered to have a metastasis until proven otherwise. Early diagnosis is very important, which enables prompt initiation of systemic treatment, such as chemotherapy, endocrine therapy or both, thus avoiding unnecessary radical surgical resection and improving the prognosis.
authors.affiliation: Department of Surgery, The Dingli Clinical Institute of Wenzhou Medical College (Wenzhou Central Hospital), Wenzhou, Zhejiang, P.R. China. bobzxccc@163.com
authors.forename: Xiao-cong
authors.initials: XC
authors.lastname: Zhou
authors.forename: Hong
authors.initials: H
authors.lastname: Zhou
authors.forename: Ying-hai
authors.initials: YH
authors.lastname: Ye
authors.forename: Xiu-feng
authors.initials: XF
authors.lastname: Zhang
authors.forename: Yi
authors.initials: Y
authors.lastname: Jiang
mesh_terms: D001943:Breast Neoplasms / Q000473:pathology*; D018270:Carcinoma, Ductal, Breast / Q000473:pathology / Q000556:secondary*; D005260:Female; D006801:Humans; D008875:Middle Aged; D012811:Sigmoid Neoplasms / Q000473:pathology / Q000556:secondary*