HP and ulcer disease: By searching the Japana Centra Revuo Medicina and MEDLINE for the literature published between 1990 and 2010 using “non-Hp, non-NSAID ulcer”, “idiopathic peptic ulcer”, and “gastric antral ulcer” as key words, we found 1 case of idiopathic gastric antral ulcer reported by Tsuji et al [14], 2 cases reported by Nishikawa et al [1], and 2 cases reported by Aoyama et al [15] in their papers concerning peptic ulcer.