Usually, gallbladder cancer patients, even early stage gallbladder cancer patients, are required by doctors to have regular review after surgery, why? Self-sensing lags For whether gallbladder cancer is recurrent or metastatic, it is difficult for patients to find out through their own symptoms. For all tumors, especially abdominal tumors, once symptoms appear or they feel out, the tumor grows to at least 5 cm or even 10 cm. Objective examination is sensitive Regular postoperative review is very important, especially within two years after surgery is the peak period of recurrence. Objective examination indicators are more sensitive and earlier to detect recurrence and metastasis than subjective feeling. Usually, abdominal ultrasound and serum tumor markers should be done every three months for early detection of local recurrence or distant metastasis of gallbladder cancer. (Of course, ultrasound and marker examination are only the initial screening. If one of these two indicators appears abnormal, then further examinations, such as CT, MRI or even PET-CT and other more accurate examinations, are needed.) Only the detection of recurrence and metastasis in a relatively short period of time and the timely use of additional methods to cope with the treatment, such as another surgery or chemotherapy or radiotherapy, can help control the disease and prolong the patient’s life.