title: Adenocarcinoma of the ileum producing carbohydrate antigen 19-9: report of a case.
abstract: We report herein the case of an 81-year-old woman found to have small intestinal carcinoma producing carbohydrate antigen (CA)19-9, in whom recurrence on the abdominal wall was strongly suspected 4 months after resection. She presented to our hospital with acute abdominal pain with severe anemia. Marked serum elevation of CA19-9 to 164.8 U/ml suggested a progression to malignancy. A fluorography using an ileus tube revealed an abnormal mucosal pattern. An exploratory laparotomy showed an incomplete annular constrictive Borrmann type 2 tumor, located approximately 190 cm from Treitz's ligament, without any signs of peritoneal or hepatic metastases. Histological examination confirmed a diagnosis of papillotubular adenocarcinoma without metastases of the regional lymph nodes. CA19-9 antigenicity was detected in the cytoplasm and on the surface of the cancer cells, using the monoclonal CA19-9 antibody, NS19-9. In this report, we demonstrate the CA19-9 productivity and distribution of the cancer tissues in relation to their prognosis.
authors.affiliation: First Medical Section of Medical Division, Fuchu Prison, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Hara
authors.forename: T
authors.initials: T
authors.lastname: Kawasaki
authors.forename: E
authors.initials: E
authors.lastname: Yabata
authors.forename: T
authors.initials: T
authors.lastname: Gen
authors.forename: M
authors.initials: M
authors.lastname: Kikuchi
authors.forename: T
authors.initials: T
authors.lastname: Iwai
mesh_terms: D000231:Adenocarcinoma, Papillary / Q000175:diagnosis* / Q000276:immunology* / Q000473:pathology / Q000601:surgery; D000368:Aged; D000369:Aged, 80 and over; D018798:Anemia, Iron-Deficiency / Q000209:etiology; D014408:Biomarkers, Tumor / Q000097:blood*; D018395:CA-19-9 Antigen / Q000097:blood*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007078:Ileal Neoplasms / Q000175:diagnosis* / Q000276:immunology* / Q000473:pathology / Q000601:surgery; D007150:Immunohistochemistry; D009780:Occult Blood
chemical_list: D014408:Biomarkers, Tumor; D018395:CA-19-9 Antigen