Is cystoscopy reliable for kidney cancer?

Cystoscopy for kidney cancer: In our daily life, kidney cancer is very common, and it causes great pain to patients. In order to prevent the disease from endangering our health, we need to learn more about kidney cancer examination methods so that we can detect and treat it early. So let's learn about the examination methods for kidney cancer.

l. General examination: Hematuria is an important symptom, and progressive anemia may also occur. In bilateral renal tumors, total renal function usually does not change, but the erythrocyte sedimentation rate increases. Some renal cancer patients do not have bone metastasis, but may have symptoms of hypercalcemia and increased serum calcium levels. After renal cancer resection, the symptoms are quickly relieved and the blood calcium returns to normal. Sometimes it may develop into liver dysfunction, which can return to normal if the tumor kidney is removed.
2. X-ray angiography is the main method for diagnosing renal cancer. (1) Plain X-ray film: Plain X-ray films can show that the kidney is enlarged and its contour is changed. Occasionally, there is tumor calcification, localized or widespread flocculent shadows within the tumor, and calcification lines and shells around the tumor. Renal cancer is more common in young people.
(2) Intravenous urography. Intravenous urography is a routine examination method. However, it cannot show tumors that have not yet caused the renal pelvis and calyces to deform, and it is difficult to distinguish whether the tumor is renal cancer, renal angiomyolipoma, or renal cyst. Therefore, its importance is reduced, and ultrasound or CT examination must be performed at the same time for further identification. However, intravenous urography can understand the function of both kidneys and the condition of the renal pelvis, calyces, ureters, and bladder, which has important reference value for diagnosis.
(3) Renal artery angiography: Renal artery angiography can detect tumors that are not deformed by urinary system angiography. Renal cancer manifests itself in neovascularization, arteriovenous fistulas, pooling of contrast agents, and increased capsular blood vessels. Angiography varies greatly, and sometimes renal cancer may not be visualized, such as tumor necrosis, cystic changes, arterial embolism, etc. When necessary, adrenaline can be injected into the renal artery during renal artery angiography to cause normal blood vessels to contract while tumor blood vessels do not react. This is the case for relatively large renal cancers. Selective renal artery angiography can also be followed by renal artery embolization, which can reduce bleeding during surgery. Renal artery embolization can be performed as a palliative treatment for patients with renal cancer that cannot be surgically removed and who have severe bleeding.