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What is A gastric ulcer is said to be refractory when it fails to heal after therapy for: and explain in detail?
A gastric ulcer that fails to heal after 12 weeks and a duodenal ulcer does not heal at 8 weeks of therapy should be considered refractory. Cause of refractory ulcers: Malignancy Zollinger Ellison syndrome Cigarette smoking Ischemia Crohn's disease Lymphoma Eosinophilic gastroenteritis Infections (TB,CMV) Ref: Harrisons principles of internal medicine, 18th edition, Page: 2452