title: Gastric metastasis from breast cancer: a pitfall in gastric biopsy specimens.
abstract: A 49-year-old woman presented with abdominal discomfort and weight loss. Gastroduodenoscopy showed small polypoid lesions and biopsy specimens suggested primary adenocarcinoma with neuroendocrine differentiation. As the patient had a prior history of metachronous breast cancer, it was concluded that the case was metastatic carcinoma from the breast. The usefulness of a panel of selected immunohistochemical markers to determine the primary site of the breast in an appropriate clinical setting is greatly emphasized.
authors.forename: M
authors.initials: M
authors.lastname: Shimizu
authors.forename: T
authors.initials: T
authors.lastname: Matsumoto
authors.forename: M
authors.initials: M
authors.lastname: Hirokawa
authors.forename: K
authors.initials: K
authors.lastname: Shimozuma
authors.forename: T
authors.initials: T
authors.lastname: Manabe
mesh_terms: D000230:Adenocarcinoma / Q000378:metabolism / Q000556:secondary*; D014408:Biomarkers, Tumor / Q000378:metabolism; D001706:Biopsy; D001943:Breast Neoplasms / Q000378:metabolism / Q000473:pathology*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008875:Middle Aged; D011960:Receptors, Estrogen / Q000378:metabolism; D013274:Stomach Neoplasms / Q000378:metabolism / Q000556:secondary*
chemical_list: D014408:Biomarkers, Tumor; D011960:Receptors, Estrogen