Paradox over role of Helicobacter pylori

BMJ 1996; 313 doi: (Published 03 August 1996) Cite this as: BMJ 1996;313:250

A gastric ulcer doubles the risk of developing stomach cancer, while ulcers in the duodenum seem to be protective, reducing the chances of developing cancer by 40%, suggests a recent study.

In the largest study to date to examine the connection between peptic ulcers and gastric cancer nearly 60 000 patients were followed for an average of 9.1 years (N Engl J Med 1996;335:242-9). They had all received hospital treatment …

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