| This is history of medicine. There are circumferential ulcerations one larger as well as a smaller ulcer that are characteristic for infection by Mycobacterium bovis (rare now because of pasteurization of milk). Swallowed pulmonary secretions with M. tuberculosis may rarely produce this finding. The circumferential ulcerations may heal with stricture. [Image courtesy of John Nicholls MD, Hong Kong University] |
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