Chapter 17, Problem 13SQ

a.

Summary Introduction

To explain: The way by which peptic ulcers often do not heal quickly but tend to persist or recur.

Concept introduction: Ulceration or sores that develop in the protective mucosal lining of the lower esophagus, stomach, or duodenum is called as peptic ulcers. The severity of peptic ulcers varies from single or multiple, acute or chronic, to superficial or deep.

b.

Summary Introduction

To describe: The common difference between gastric ulcer and gastric cancer.

Concept introduction: Ulceration or sores that develop in the protective mucosal lining of the stomach is called as gastric ulcers. The common causes of peptic or gastric ulcer are infections caused by H. pylori that can lead to gastric cancer. The infections cause mutations in the mucosal cells of the stomach linings.