clinically, gastric ulcers are more common than duodenal ulcers

duodenal ulcers can frequently be malignant

peptic gastric ulcers are usually quite proximal in the stomach

infection can cause both types of peptic ulcer

A 54-year-old man complains of burning epigastric pain that usually improves after a meal, and is occasionally relieved with antacids. On examination, he appears well and besides some epigastric tenderness on palpation, the rest of the examination is normal. Upper endoscopy confirms a duodenal ulcer. Which of the following statements concerning PUD is most likely correct?