<prompt> What is true of pepsinogen?Is a condition in which it is safe to leave microscopic disease at the cut edgesShows favorable response to radiotherapyHas a 5-year survival rate of about 12Rates are increased in patients with duodenal ulcer  <response>: Survival rates are increased in patients with gastric ulcer. The 5-year survival rate for all types of gastric carcinoma is about 12, but it is 35 if the nodes are clear and 7 if the nodes are involved. It is important that the cut edges are clear of tumor to avoid almost certain recurrence. 