124
Participants
Start Date
October 1, 2020
Primary Completion Date
September 30, 2023
Study Completion Date
September 30, 2030
surgery
Colorectal surgery, mainly total proctocolectomy.
enhanced colonoscopy
Colonoscopic treatment and surveillance in every 3 months.
self choosed methods
A patient chooses a method for himself other than surgery.
Changhai Hospital, Shanghai
Changhai Hospital
OTHER