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Granulomatous Conditions Involving the Stomach

Figure 8 : Gastroduodenal Crohn's disease. There is contiguous narrowing of the antrum and duodenum, with obliteration of the normal anatomic landmarks at the pylorus. Because the antrum and duodenum merge together as a single tubular structure, this finding has been described as the pseudo-Billroth I sign of gastroduodenal Crohn's disease. (From Levine MS: Crohn's disease of the upper gastrointestinal tract. Radiol Clin North Am 25:79-91, 1987.)

General Findings

Narrowing of lumen (Fig. 7, Fig. 8, Fig. 9)

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