title: Significance of serum and tissue carcinoembryonic antigen for the prognosis of gastric carcinoma patients.
abstract: OBJECTIVE
  Carcinoembryonic antigen (CEA) has been widely accepted as a tumor marker useful in the diagnosis and management of colorectal carcinoma. When CEA levels are positive in patients with gastric carcinoma, they could be useful prognostic indicators. The value of CEA as a tumor marker for gastric carcinoma, however, remains a matter of controversy. The purpose of this study was to determine whether preoperative serum CEA value and tissue CEA staining are useful prognostic indicators for gastric carcinoma.
  
  
  METHODS
  We measured preoperative serum CEA levels by radioimmunoassay and stained tissue CEA production by tumor cells from gastric carcinomas using immunohistochemical staining in patients with gastric carcinoma.
  
  
  RESULTS
  The patients with preoperative serum CEA levels >10.0 ng/mL had a more prominent serosal invasion, much more lymph node involvement, more advanced stage and more poorly differentiated than did the patients with preoperative serum CEA levels <5.0 ng/mL. The survival rate of patients with serum CEA levels >10.0 ng/mL was poorer than those of patients with serum CEA levels between 5.0 and 10.0 ng/mL, and those of patients with serum CEA levels <5.0 ng/mL (P < 0.05). The preoperative serum CEA levels and tumor CEA-positivity were correlated (P < 0.05). In patients with lymph node metastases, the CEA-positivity (78.0%) was higher than in patients without lymph node metastasis (63.2%) (P < 0.05). A correlation was also found between the depth of tumor invasion and tissue CEA-positivity (P < 0.001). The postoperative survival rate was significantly better in the CEA-negative staining group (78.0%) than in the CEA-positive staining group (60.0%).
  
  
  CONCLUSIONS
  These data suggest that preoperative serum CEA levels and staining for CEA in gastric carcinoma tissue sections may have a predictive value in determining prognostic information for patients with resectable gastric carcinoma.
authors.affiliation: Department of Surgery, Chonnam National University Medical School, Kwangju, Korea.
authors.forename: D Y
authors.initials: DY
authors.lastname: Kim
authors.forename: H R
authors.initials: HR
authors.lastname: Kim
authors.forename: J H
authors.initials: JH
authors.lastname: Shim
authors.forename: C S
authors.initials: CS
authors.lastname: Park
authors.forename: S K
authors.initials: SK
authors.lastname: Kim
authors.forename: Y J
authors.initials: YJ
authors.lastname: Kim
mesh_terms: D002272:Carcinoembryonic Antigen / Q000097:blood / Q000378:metabolism*; D002277:Carcinoma / Q000097:blood / Q000276:immunology* / Q000473:pathology; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008207:Lymphatic Metastasis; D008297:Male; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging; D011300:Preoperative Care; D011379:Prognosis; D011863:Radioimmunoassay; D013274:Stomach Neoplasms / Q000097:blood / Q000276:immunology* / Q000473:pathology; D016019:Survival Analysis
chemical_list: D002272:Carcinoembryonic Antigen