How many common typical symptoms of kidney cancer do you know? Kidney cancer is a kind of malignant tumor disease which is very dangerous, and it is not untraceable, there will be some symptoms when the disease occurs. How many common typical symptoms of kidney cancer do you know? Most of them are dull pain, confined to the lumbar region. The pain is often caused by the growth of the mass filling the kidney peritoneum, and the blood mass passing through the ureter can also cause lumbar pain as mentioned above. When the tumor invades the surrounding organs and lumbar muscle, the pain is more severe and persistent. 2.Hematuria: Hematuria is often painless and intermittent, and the whole process of hematuria is visible to the naked eye, and the intermittent period is shortened with the development of lesion. When kidney cancer bleeds a lot, it may be accompanied by renal colic, which is often caused by the passage of blood clots through the ureter. The blood clots in hematuria of kidney cancer may be formed in strips by passing through the ureter. The degree of hematuria is not related to the size of the kidney cancer. Sometimes, kidney cancer may manifest as persistent microscopic hematuria. 3.Lumps: Lumps are also a common symptom. About 1/3 to 1/4 of kidney cancer patients can find enlarged kidneys when they visit the doctor. Since the kidney is hidden, it is difficult to detect the mass until the kidney cancer reaches a large volume. Generally, it is already an advanced symptom when a lump is felt in the abdomen. 4.Pain: Pain is seen in about 50% of cases and is also a symptom of advanced stage. It is caused by the persistent pain in the affected lumbar region due to the involvement of the kidney peritoneum or renal pelvis by the gradually growing tumor, or the compression of connective tissue, muscle, lumbar vertebrae or lumbar nerve of the posterior abdominal wall by the tumor invasion.