下静脉痔疮

下痔静脉是位于直肠下部的一组静脉。这些静脉负责血液从直肠、结肠下部和乙状结肠的流出，并确保粪便通过肠道的运动。

痔疮的下静脉起源于两侧的下静脉

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Dr. William Whitbourne

Dr. William Whitbourne