环状胰腺是指胰腺组织环绕十二指肠降段。
Annular pancreas refers to pancreatic tissue enveloping primarily the descending duodenum.
该病目前的诊断标准需要从十二指肠降段取4块活检。
The current standard for diagnosing CD involves obtaining 4 biopsy samples from the descending duodenum.
目的探讨十二指肠降段病变并出血的病因、主要临床表现及胃镜下改变。
Objective To probe into the cause , clinical manifestation and gastroscopy of bleeding of duodenal descending part disease.
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