Surgical intervention is only indicated in a small group of patients with intractable constipation failed to conservative treatment.

只有少数经保守治疗无效的顽固性便秘患者需要手术治疗。

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Defecography; constipation; Obstruction of functional outlet; Intractable constipation.

排粪造影；便秘；功能性出口梗阻；顽固性便秘。

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