Objective:To explore the causes of constipation by displaying the functional and anatomic abnormalities of continuity between anal canal and rectum with defecography.

• 目的通过便秘患者的排粪造影资料显示其肛管直肠形态及功能,寻找便秘原因。方法109例排粪造影,其中13例行结肠传输试验。