title: [Gastric cancer: epidermal growth factor and epidermal growth factor receptor].
abstract: In 19 patients with advanced gastric cancer the expression of epidermal growth factor receptor and epidermal growth factor (EGF) were studied using immunohistochemical techniques. There were 12 males and the mean age of the group was 54.8 years. Most cases belonged in Borrmann's types III or IV. Tumoral cells were positive for EGF receptor in 9 patients (47%), with a strong reaction in 6. Thirteen of 18 subjects were positive for EGF. The reaction for EGF receptor was positive in 20% of 12 patients with intestinal type tumors and in 67% of 7 patients with diffuse tumors. Reaction for EGF was positive in 80% of intestinal type tumors and 64% of diffuse tumors. Simultaneous positive reactions for both antigens was observed in 5 of 18 patients, all with diffuse type tumors. Signet ring cell tumors showed less positivity than less differentiated ones. Thus, the expression of EGF and EGF receptor was higher in our patients with advanced gastric cancer than reported elsewhere.
authors.affiliation: Unidad de Anatomía Patológica y Citopatología, Facultad de Medicina, Universidad de La Frontera, Hospital de Temuco, Chile.
authors.forename: I
authors.initials: I
authors.lastname: Roa
authors.forename: J C
authors.initials: JC
authors.lastname: Araya
authors.forename: X
authors.initials: X
authors.lastname: de Aretxabala
authors.forename: I
authors.initials: I
authors.lastname: Wistuba
authors.forename: M
authors.initials: M
authors.lastname: Villaseca
authors.forename: K
authors.initials: K
authors.lastname: Saito
authors.forename: K
authors.initials: K
authors.lastname: Nakamura
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000911:Antibodies, Monoclonal; D014408:Biomarkers, Tumor / Q000032:analysis*; D002277:Carcinoma / Q000737:chemistry* / Q000473:pathology; D004815:Epidermal Growth Factor / Q000032:analysis*; D066246:ErbB Receptors / Q000032:analysis*; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D013274:Stomach Neoplasms / Q000737:chemistry* / Q000473:pathology
chemical_list: D000911:Antibodies, Monoclonal; D014408:Biomarkers, Tumor; D004815:Epidermal Growth Factor; D066246:ErbB Receptors
vernacular_title: Cáncer gástrico: factor de crecimiento epidérmico y receptor del factor de crecimiento epidérmico.