title: [Small bowel metastasis from breast cancer: a case report].
abstract: Breast cancer is a common malignancy in women and frequently metastasizes to various organs such as liver, lung, brain, bone and so on. But metastasis to gastrointestinal tract is rare. We describe a 73-year-old woman with small intestinal metastasis of breast cancer. She was diagnosed as right breast cancer in stage I, received modified radical mastectomy 6 years ago and had been followed up without any evidence of residual disease. During investigation for lower abdominal pain and weight loss of 9 kg, we found a small bowel mass. The histology of the tissue taken from small bowel mass was adenocarcinoma, poorly differentiated. The immunohistochemical stain of this specimen showed 75% positivity of estrogen receptor and 90% positivity of progesterone receptor. This is a case of small bowel metastasis from breast cancer and we report this case with a review of literatures.
authors.affiliation: Department of Internal Medicine, St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea.
authors.forename: Don Hyoun
authors.initials: DH
authors.lastname: Jo
authors.forename: Dae Young
authors.initials: DY
authors.lastname: Cheung
authors.forename: Hyung Keun
authors.initials: HK
authors.lastname: Kim
authors.forename: Dong Kyun
authors.initials: DK
authors.lastname: Son
authors.forename: Ji Sung
authors.initials: JS
authors.lastname: Chung
authors.forename: Jin Il
authors.initials: JI
authors.lastname: Kim
authors.forename: Soo Heon
authors.initials: SH
authors.lastname: Park
authors.forename: Joon Yeol
authors.initials: JY
authors.lastname: Han
authors.forename: Jae Kwang
authors.initials: JK
authors.lastname: Kim
authors.forename: Kyu Won
authors.initials: KW
authors.lastname: Chung
mesh_terms: D000230:Adenocarcinoma / Q000556:secondary*; D000368:Aged; D001943:Breast Neoplasms / Q000473:pathology*; D005260:Female; D006801:Humans; D007414:Intestinal Neoplasms / Q000175:diagnosis / Q000556:secondary*; D007421:Intestine, Small