Postoperative Follow-Up Evaluation

Lab tests, including routine examination, blood biochemical measurement, and tumor indicators, were performed every 1 to 3 months during follow-up examinations after hospital discharge. During the first two years, imaging examinations such as ultrasound and computed tomography (CT) are conducted every three months, and then every six months for the next three years. CT, brain magnetic resonance imaging (MRI), bone scan, and positron emission tomography (PET) were used to evaluate recurrent or metastatic disease when signs of recurrence appeared. Doctors diagnosed recurrence based on clinical symptoms and imaging examination results, and if necessary, a pathology examination was undertaken.