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Gregory Connell, M.D.
JAMA. 1933;100(25):2038. doi:10.1001/jama.1933.02740250060027.
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To the Editor:  —In The Journal, May 27, Drs. Crohn and Gerendasy report a case and discuss the subject of traumatic ulcer of the duodenum and stomach. The conclusion that "the evidence seems convincing that the trauma caused the ulcer" might be misleading. The reference to "students of gastro-enterology refusing to accept the concept of traumatic gastric ulcer" calls for elucidation as to just what this concept is.The four postulates of Liniger and Molineus satisfactorily exclude cases of pseudo-ulcer but fail to explain why gastro-duodenal trauma should be followed by the development of ulcer in certain cases and not in others.The evidence in the reported case is certainly convincing, that the trauma caused the injury to the duodenal mucous membrane. Of this sequence there can be no reasonable doubt.Because the intestinal mucosa, like the skin, has an inherent tendency toward repair, something more than the injury is


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