Fig. 21. Adenocarcinoma.Circumferential wall thickening of duodenum is detected on axial fast spin echo T2-weighted image (arrow in A) in 73-year-old patient.

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Fig. 21. Adenocarcinoma.Circumferential wall thickening of duodenum is detected on axial fast spin echo T2-weighted image (arrow in A) in 73-year-old patient with epigastric pain. In another patient, diffuse irregular mural thickening (arrow in B) causing luminal stenosis in 3rd and 4th segments of duodenum is demonstrated in MRI small-bowel follow-through image (histopathology: adenocarcinoma). In differential diagnosis of adenocarcinoma, carcinoid tumor, lymphoma, and metastasis should be taken into consideration. Fig. 21. Adenocarcinoma.Circumferential wall thickening of duodenum is detected on axial fast spin echo T2-weighted image (arrow in A) in 73-year-old patient with epigastric pain. In another patient, diffuse irregular mural thickening (arrow in B) causing luminal stenosis in 3rd and 4th segments of duodenum is demonstrated in MRI small-bowel follow-through . . . Korean J Radiol. 2015 Nov-Dec;16(6):1240-1252. http://dx.doi.org/10.3348/kjr.2015.16.6.1240