The positive rate of colonoscopy, X-ray of gastrointestinal tract, capsule endoscopy and double-balloon enteroscopy is 77.1%, 63.2%, 75% and 100% respectively.

• 结肠镜、消化道X线、胶囊内镜及双气囊推进式小肠镜检查的阳性率分别为77.；1%25，63