title: Inappropriate CA 72-4 elevation in a Helicobacter pylori infected patient.
abstract: Carcinoma antigen 72-4 is a cell surface glycoprotein produced by gastric carcinoma cells. In the case presented, Helicobacter pylori infection induced an inappropriate elevation of this tumour antigen in a 66-year-old female patient, reaching values seen with gastric carcinomas. Extragastric sources of CA 72-4 elevation were ruled out. The elevation slowly returned to normal levels after two courses of triple and sequential eradication therapy, causing considerable anxiety for the patient and several costly examinations.
authors.forename: G M
authors.initials: GM
authors.lastname: Buzás
mesh_terms: D015295:Antigens, Tumor-Associated, Carbohydrate / Q000097:blood*; D015415:Biomarkers / Q000097:blood; D005189:False Positive Reactions; D005260:Female; D005756:Gastritis / Q000097:blood* / Q000175:diagnosis*; D016481:Helicobacter Infections / Q000097:blood* / Q000175:diagnosis*; D006801:Humans; D008875:Middle Aged; D011230:Precancerous Conditions / Q000097:blood / Q000175:diagnosis; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013274:Stomach Neoplasms / Q000097:blood* / Q000175:diagnosis*
chemical_list: D015295:Antigens, Tumor-Associated, Carbohydrate; D015415:Biomarkers; C083825:CA-72-4 antigen