There is no specific data indicating how many years it takes for a kidney tumor to grow to 5cm, but due to the existence of individual variability, it is not possible to make a generalization. Kidney tumor is a common tumor of the urinary system, most of which are malignant. Its etiology is not yet clear, and it may be caused by smoking, poor diet, heredity, obesity, hypertension, chemical irritation and other factors. There is no authoritative information that kidney tumor grows to 5cm specifically need a few years. Some patients have serious condition, the tumor develops faster and the growth time is shorter. Therefore, once diagnosed with kidney tumor, patients are recommended to take relevant treatment measures in time. If the body allows, renal tumor resection, preservation of renal unit surgery and so on can be taken, after the operation can be combined with radiotherapy, chemotherapy and other ways to treat the disease. Once diagnosed with lung tumor, patients should actively cooperate with doctors to take relevant treatment measures to prolong life and improve the quality of life as much as possible.