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Carcinoid tumor in the duodenum

Carcinoid tumor in the duodenum
Endosonographic view of a duodenal carcinoid tumor (arrow). Carcinoids are hypo- or isoechoic with regular margins. They arise from the mucosa/lamina propria (second layer of the GI tract) and can invade the submucosal layer.
Courtesy of Mary Lee Krinsky, DO and Kenneth Binmoeller, MD.
Graphic 51383 Version 3.0