Cancer review can be done in hospital or in outpatient, depending on the patient’s own situation and the arrangement of the hospital he/she visits. 1. Inpatient review: If cancer patients need to continue specialized oncology treatment, such as targeted drug therapy, chemotherapy, etc., it is recommended that they should be hospitalized for review and receive anti-tumor therapy at the same time. Some patients do not need to continue the treatment, but need to review the blood, tumor markers, liver function, kidney function, etc., which may require fasting blood sampling on the next day, and need to be hospitalized, but the time will not be too long, usually 2-3 days. 2. Outpatient review: Cancer patients do not need to continue treatment, but only need to undergo targeted examinations, such as bone scan, CT, ultrasound, MRI, etc. Outpatient examination is sufficient.