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 glucose glucose has any effect. What are the causes of renal pelvic tumors and ureteral tumors? Balkan nephropathy is interstitial nephritis, a common cause of renal pelvic ureteral carcinoma, including Yugoslavia, Romania, Bulgaria, Greece, etc. There is a clear regional, or even inter-village, boundary, slow development, hyperalgesia, similar number of men and women, 10% bilaterally. Environmental, occupational, and genetic investigations have been conducted, and the cause remains unclear. Because it is prone to renal function damage, superficial and multiple, treatment should preserve renal tissue as much as possible. Painkillers can cause renal pelvis cancer, and in recent years it is believed that acetaninophen (Tylen01) is its metabolite with carcinogenic quality. Painkiller carcinogenicity often requires accumulation of more than 5 kg, which is similar to the chance of carcinogenicity of smoking 15 cigarettes per day for 20 years. Most of the patients have no obvious positive signs, but about 7% of them show malignant mass and are advanced cases. Enlarged kidneys may be palpable in 5%-15% of cases, and there may be pressure pain in the spinal rib angle. It has been reported that 10%-15% have no clinical symptoms and are only found incidentally during examination for other diseases. Ureteral carcinoma of the renal pelvis has a multi-organ nature and may have symptoms of bladder irritation, i.e., manifestations of bladder tumors. Varicocele and retroperitoneal lumbar signs may be present in case of local spread. Squamous cell carcinoma often shows signs of stones or infection. Filling defects are seen on excretory urography and should be differentiated from uric acid stones and stromal stones, and sometimes the defects can be due to blood clots. Renal parenchymal tumors and cysts may be seen as filling defects in the renal pelvis and calyces, and sometimes ultrasound and CT are required to confirm the diagnosis. Small defects in the renal pelvis may be caused by the renal artery and its branches. Tumors can cause ureteral opacification, especially in ureteral tumors. According to statistics, when renal pelvis cancer is opacified, 1/3 of the cases are high stage, that is, infiltrative cancer, and when ureteral cancer is opacified, 60% to 80% are infiltrative. Hydronephrosis accounts for 35% of cases, and hydronephrosis is found in 20% of cases with ureteral filling defects. 85% of those with normal urography are tumors of low stage.