title: Gastric metastasis of breast cancer: a single centre retrospective study.
abstract: BACKGROUND
  Digestive metastasis of breast cancer are rare but when they do occur the stomach is one of the commoner sites.
  
  
  OBJECTIVE
  To describe the clinical, endoscopic, pathological features and treatment.
  
  
  METHODS
  35 cases of gastric metastasis were identified retrospectively between 1980 and 2008.
  
  
  RESULTS
  The location of the gastric metastasis was fundus (n=15, 43%), antrum (n=15, 43%) or both (n=5, 14%). The histological subtype of primary breast cancer was invasive lobular carcinoma in 34 patients (97%). Hormonal receptors were positive in 19 out of 24 cases (79%), two out of 22 analysed were HER2 positive (9%). There were 16 (46%) patients with peritoneal carcinosis. The treatment was chemotherapy (n=13, 37%), hormonotherapy (n=2, 6%) or both (n=13, 37%). The 2-year survival rate after gastric metastasis diagnosis was 53% with a median follow up of 31 months [7-84 months].
  
  
  CONCLUSIONS
  Ninety-seven percent of gastric metastasis from breast cancers are derived from invasive lobular carcinoma. Seventy-nine percent of these are HER+ and comparison with the original histopathological slides of primary breast carcinoma should be performed to differentiate gastric metastasis from primary gastric carcinoma. Peritoneal carcinomatosis accompanied gastric metastasis in almost half the cases in this series and treatment was generally chemotherapy.
authors: Department of Surgery, Curie Institute, Paris, France.
authors: Maher M
authors: MM
authors: Almubarak
authors: Marick
authors: M
authors: Laé
authors: Wulfran
authors: W
authors: Cacheux
authors: Patricia
authors: P
authors: de Cremoux
authors: Jean-Yves
authors: JY
authors: Pierga
authors: Fabien
authors: F
authors: Reyal
authors: Simon P
authors: SP
authors: Bennett
authors: Marie-Christine
authors: MC
authors: Falcou
authors: Remy J
authors: RJ
authors: Salmon
authors: Bernard
authors: B
authors: Baranger
authors: Pascale
authors: P
authors: Mariani