How does kidney tumour cause

Most renal tumors are malignant. Renal cell carcinoma (RCC) is a malignant tumor originating from the urotubular epithelial system of the renal parenchyma. about 90% of them are clear cell renal carcinoma. The cause of kidney cancer is unknown. The disease is related to heredity, smoking, obesity, hypertension and antihypertensive therapy. Hereditary or familial kidney cancer accounts for 2% to 4% of the total number of kidney cancers. Smoking and obesity prevention are important ways to prevent kidney cancer. The incidence of benign renal tumors is related to obesity, hypertension, genetics, smoking, food and drugs, occupation, etc.