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  • Title: Does the eradication of Helicobacter pylori delay the diagnosis of gastric cancer?
    Author: Kokkola A, Sipponen P, Arkkila P, Danielson H, Puolakkainen P.
    Journal: Scand J Gastroenterol; 2008; 43(12):1456-60. PubMed ID: 18663664.
    Abstract:
    OBJECTIVE: To assess the frequency of gastric cancer patients having received eradication treatment of Helicobacter pylori, and whether this treatment has any influence on the delay in the diagnosis or the stage of the tumours at the time of the operation. MATERIAL AND METHODS: A total of 119 consecutive patients with gastric cancer were interviewed preoperatively between 2001 and 2003 at the Department of Surgery, Helsinki University Central Hospital. Abdominal symptoms, previous endoscopies, previous H. pylori testing and eradication therapies were recorded. RESULTS. Of these patients, 112 (94%) had abdominal symptoms before the cancer diagnosis, and in 110 patients (92%) these symptoms were alarming or had changed before the cancer diagnosis. Thirty-five patients (29%) had received H. pylori eradication therapy prior to the diagnosis of gastric cancer (15 after onset or change in symptoms, 10 more than 5 years prior to the cancer diagnosis). The median duration of alarm, new or changed symptoms was longer among patients with H. pylori eradication therapy after the onset or change in their symptoms as compared to other patients (12.0 versus 4.5 months, p=0.001). However, there was no difference in the tumour stages at time of the operation between the eradication and no eradication groups. A previous gastroscopy within 2 years prior to the cancer diagnosis was performed in 17 (14%) patients. Diffuse-type cancers were missed significantly more often in endoscopies than cancers of intestinal type. CONCLUSION: Previous H. pylori eradication may delay the detection of gastric cancer if it is given during symptoms caused by tumour.
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