Kidney cancer refers to a malignant tumor that occurs in the kidney. The causes of kidney cancer are not particularly clear at present, but are related to genetics, smoking, obesity, hypertension, and the treatment of hypertension. Most early-stage kidney cancer patients are found to have asymptomatic kidney cancer during health check-ups, and these patients account for more than 50% to 60% of all kidney cancer cases.

Patients with kidney cancer generally experience back pain and hematuria, and some patients may present with an abdominal mass. Stage II kidney cancer is considered early-stage kidney cancer. For the treatment of kidney cancer, a clear diagnosis first requires a CT scan and enhanced CT of the kidney. The preferred treatment method for stage II kidney cancer is radical nephrectomy, which can be performed using laparoscopic surgery or traditional open surgery, with laparoscopic surgery primarily favored at present.

After kidney cancer surgery, regular follow-ups are necessary to prevent distant metastasis. Therefore, post-operative check-ups should occur every 3 to 6 months for the first three years, followed by an annual follow-up thereafter. Hence, stage II kidney cancer, being early-stage, can be cured.