RID31054 internal surface of segment of duodenum
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RID31066 internal surface of posterior wall of segment of duodenum
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RID31067 internal surface of posterior wall of superior part of duodenum
RID31068 internal surface of posterior wall of descending part of duodenum
RID31069 internal surface of posterior wall of horizontal duodenum
RID31070 internal surface of posterior wall of ascending duodenum