多数边缘动脉吻合到达乙状结肠直肠动脉（64％）。
In 64% of the specimens, the marginal artery extends to the rectosigmoid arterial zone.
目的观察乙状结肠直肠动脉在上段直肠的分支分布特点。
Objective To observe the characters of the branches of the sigmoid-rectal arteries.
目的评价直肠癌的选择性动脉灌注化疗和栓塞的临床价值。
Objective To evaluate the clinical value of selective arterial infusion chemotherapy and embolization for rectal carcinoma.
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