Renal arteriography in renal pelvic tumors and ureteral tumors may reveal thinning or obstruction of the intrarenal artery, often indicating infiltration. Look for problems with kidney function and see if blood sugar glucose has any effect. How can we effectively prevent thinning or obstruction of the internal renal artery? Age mostly in 20-50 years old, more men than women. 1, desirable food: (1) desirable to eat more food with anti-bladder and urethral tumor effect, such as toad, toad, snail, kelp, nori, tortoise, turtle, jellyfish, water snake, barley, rhizome, walnut, sheep kidney, pork loin, knife beans, sandworm, perch, mackerel. (2) Urethral obstruction is appropriate to eat kelp, wakame, nori, green crab. (3) Infection is recommended to eat yellow fish swim bladder, shark fin, water snake, pigeon, jellyfish, lotus root powder, buckwheat, marjoram, ground ear, Chinese cabbage, olives, eggplant, figs, mung bean sprouts, soy milk, amaranth, purple cabbage, mud fish. (4) It is advisable to eat celery, goldenseal, leek, winter melon, umeboshi, persimmon cake, sesame seeds, lotus seeds, sea cucumber and rat meat for bleeding. 2, avoid eating food: (1) avoid smoking, alcohol, coffee, cocoa. (2) Avoid spicy, hot and dry foods that move blood. (3) Avoid moldy, fried and fatty foods. Prognosis The factors that determine the survival of kidney cancer have already been mentioned. Generally, the survival rate of kidney cancer after nephrectomy is 35%-40% in 5 years and 17%-30% in 10 years. The prognosis of kidney cancer is sometimes difficult to estimate, and metastatic lesions can appear 20 years, 30 years, or even longer after nephrectomy.