[The present state and problem of gastric ulcer caused by low-dose aspirin].

Upper gastrointestinal (GI) injuries induced by non-steroidal anti-inflammatory drugs (NSAID) and low-dose aspirin (LDA) have been increasing, because the number of patients who need to use NSAID, LDA, other anti-platelet drugs and anti-coagulants have been increasing. The aging is one of the most important risk factors of upper GI injuries induced by LDA, such as gastric ulcer. Since atypical symptoms often lead to a delay in diagnosis and treatment in the elderly patients, endoscopic examination should be considered especially in the elderly patients to detect upper GI lesions before using LDA.