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Fig. 16 | Insights into Imaging

Fig. 16

From: Duodenal imaging on the spotlight: from A to Z

Fig. 16

Intussusception. UGIS (a) rounded filling defect in the lumen of the duodenal bulb (asterisk), with regular outlines. The telescoping of mucosal folds (arrowhead) and the prepyloric collar-shaped outpouching (arrows) indicates this is an intussusception of a tumor from the gastric antrum. Abdominal CT (b) of the same patient with a prolapsing polypoid soft-tissue density mass with slightly heterogeneous enhancement (arrow). This was a gastric GIST. Abdominal CT of another gastric GIST (c, d) prolapsing to the duodenum (arrowhead). The coronal reformation shows a typical “target-like” appearance (arrows). Abdominal radiograph (e) of the same patient of 9c, d)—Retrospectively, the intraduodenal mass well-delineated by luminal air was already evident (arrows)

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