https://www.brainkart.com/article/Ulcerogenic-Tumors---Disorders-of-the-Pancreas_32139/
Ulcerogenic Tumors - Disorders of the Pancreas
Some tumors of the islets of Langerhans are associated with hy-persecretion of gastric acid that produces ulcers in the stomach, duodenum, and jejunum
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