Routine surgery is usually done in about 1 hour. From the time the patient enters the operating room, the preparation before anesthesia may take about half an hour or even an hour, and the resuscitation after anesthesia may also take about an hour, which is approximate. Surgery time is basically done in about 1 hour, except for complex lesions. Fast, dexterous and more skillful doctors may even be able to complete the surgery in half an hour. It depends on the severity of the disease and the location of the tumor, whether the tumor has metastases in the surrounding lymph nodes, or the conditions of the relevant surgical area to determine the length of the surgery.