Pancreatic cancer is a more common tumor of the digestive system.Due to the hidden nature of onset,rapid progress and a lack of early diagnosis,the prognosis of pancreatic cancer remains the worst.In this case,there is a large quantity of fibrotic tissue and fewer glands pathologically in the tumor tissues,which is different from other cases reported.The fibrosis of soft tissue near the site of the tumor was obvious.The section of the suspiciously diseased pancreas and nearby affected soft tissue was gray white and its consistency was hard,which mainly consisted of fibrous components histologically.There were more atypical glandular structures in the nearby af-fected soft tissues than in the suspiciously diseased pancreas.It was proven that these atypical glandular structures were adenocarcinoma components by the immunochemistry method.It was highly suspected that the infiltration of pancreatic carcinoma caused a large quan-tity of soft tissue fibrosis around the tumor,which was known as secondary retroperitoneal fibrosis.Pancreatic carcinomas are mostly pan-creatic enlargement,uneven echo and unclear boundary on ultrasound images.On the contrary,a large quantity of fibrotic echoes and oc-casional glandular echoes are rare like this case.
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