With reference to duodenal ulcers, consider the following statements

H pylori infection constitutes 90% of developing a duodenal ulcer, also NSAIDs also causes the development of duodenal ulcer, ulcer occurs in the first pa of the duodenum usually within the first inch involving muscular layer ), gastric metaplasia leads to the development of gastric carcinoma, anti-H.pylori regime is also useful in eradication Reference : SRB edition:5 page: 825,826,827