the top digit complex anus fistula is refers tothe multi-pipelines many moves towards complex outside,the position passed through includes a E myo-in-depth anal tube on clinical awkwardly to govern.

• 高位复杂性肛瘘是指多外口、多管道走向复杂,内口位置穿过外括的肌深层的肛管直肠瘘,临床上较为难治。