Background: It is important to understand knowledge about diagnostic error, such as cognitive bias and heuristics, for preventing a diagnostic error. However, it is unclear whether Japanese residents learn this knowledge. We aimed to assess diagnostic error knowledge in residents throughout Japan and compare it to the benchmark of the previous US score. In addition, [...]

Case Presentation: A 61-year-old female with history notable for Crohn´s disease in remission presents with dysphagia associated with an unintentional 16kg weight loss over six weeks. Review of symptoms is notable for chronic diarrhea which stopped 3 days prior to admission and acute dysuria and polyuria. She is afebrile and hemodynamically stable. Initial laboratory studies [...]