Recently, a special patient was treated in the Department of Urological Oncology of Peking University Cancer Hospital. The patient, Wang Mou (a pseudonym), was only 31 years old, just past his prime, and his career was just starting, which was the pride and hope of the whole family. However, a situation unexpected to everyone appeared. Wang Mou, who always thought he was healthy, suffered from a mixed germ cell tumor …… This means that one of Wang Mou’s testicles was seriously eroded by the tumor. He had to undergo an operation to remove one side of his testicle. And the joy of the aftermath was not yet over, after a PET-CT scan, doctors found that his retroperitoneal lymph nodes were multiply enlarged, and the diagnosis was actually testicular tumor metastasis. Wang and his family couldn’t believe the news. He was so young and vigorous, so how could he be covered by the shadow of death again? The pillar of the family suddenly collapsed and everyone was distraught. Robotic surgery overcame the difficulty and the tumor patient was discharged from the hospital in one week The chief physician of urological oncology surgery of Peking University Cancer Hospital, after learning about the patient’s situation, led the elite team of the hospital and repeatedly discussed the condition. After assessing the tumor stage, Director Du believed that retroperitoneal lymph node dissection surgery for the patient, followed by necessary adjuvant chemotherapy, could significantly improve the patient’s prognosis and even achieve the effect of radical tumor cure. However, at this point, a difficult decision was made in front of the doctor. Retroperitoneal lymph node dissection is a standard treatment for patients with suspected metastatic non-seminomatous germline tumors, and if traditional open surgery is used, not only is it invasive, but the recovery time after surgery is also long. Although classical laparoscopic surgery can significantly reduce the incision, it is still difficult to avoid complications such as massive lymphatic fistula and postoperative pain caused by the lack of delicate dissection. Faced with this young patient, the doctors wanted to minimize the trauma for him and help him recover as soon as possible. In the end, Director Du decided to use the difficult da Vinci robot-assisted lumpectomy. This surgery tested not only the technique, but also the doctors’ faith and courage. Despite the risks, they chose to rise to the occasion and performed a da Vinci robot-assisted retroperitoneal lymph node dissection at the Peking University Cancer Hospital International Medical Department (and United Family Kai Wang Cancer Center). During the procedure, the da Vinci robot-assisted lumpectomy provided the surgeon with a magnified view in 3D mode, allowing the experienced surgeon to clearly identify and ligate the tiny lymph vessels, minimizing trauma to the patient. The surgeon led the team to successfully perform a da Vinci robot-assisted retroperitoneal lymph node dissection for this testicular tumor patient. Ultimately, the entire surgery was successfully completed in nearly 2 hours with little to no intraoperative bleeding. After the surgery, the patient was almost pain-free and was discharged from the hospital a week later. From a patient with a life-threatening tumor to a sunny boy with a new life, the kindness of a doctor saves not only a young life, but also a whole family.