Evaluation and follow-up
tumor
METASTASIS, TUMOR, RECURRENCE, POSTOPERATIVE COMPLICATIONS
The postoperative complications were confirmed by the investigators according to the Clavien‒Dindo grading (Dindo et al. Follow-up of the entire study population was mainly conducted by telephone and outpatient review. During follow-up, patients underwent physical examination, computerized tomography scans, or serum tumor marker evaluations (including CEA, CA125, CA199, CA242, CA724, AFP, etc.) every 3 months for the first 2 years, and then every 6 months for 3–5 years. The values of these tumor markers were compared with the previous data to detect any potential recurrence or metastasis in advance. The last follow-up was performed in June 2022.