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(A) Abdomen CT scan shows circumferential wall thickening (arrowheads ) of the small bowel with luminal narrowing and dilated bowel proximal to the obstruction. (B) This lesion was resected by surgery. (C) Microscopic findings show mucinous adenocarcinoma invading the sub serosa containing signet ring cells (H&E, ×100) and (D) mesenteric lymph node metastases (H&E, ×40).  

(A) Abdomen CT scan shows circumferential wall thickening (arrowheads ) of the small bowel with luminal narrowing and dilated bowel proximal to the obstruction. (B) This lesion was resected by surgery. (C) Microscopic findings show mucinous adenocarcinoma invading the sub serosa containing signet ring cells (H&E, ×100) and (D) mesenteric lymph node metastases (H&E, ×40).  

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