Kidney cancer is a dangerous disease and is likened to a "silent killer". The disease often progresses silently and is only detected in the advanced stages. Therefore, when detecting abnormal symptoms, patients should go to the doctor as soon as possible to diagnose and evaluate the prognosis of kidney cancer and treat the disease in time.

Kidney cancer begins when healthy cells in one or both kidneys change and grow out of control, forming a mass called a cortical tumor. A tumor can be malignant or benign.