Kidney cysts are usually not cancerous, but if the patient is suffering from persistent chronic inflammation as well as certain harmful substances and exposure to radioactive substances, it may lead to the occurrence of cancerous lesions. Kidney cyst is a benign lesion, the pathogenesis is still unclear, usually due to the abnormal function of its own renal tubular epithelial cells, kidney cyst usually does not develop cancer. However, due to frequent exposure to harmful substances, certain radioactive substances, chronic inflammation stimulation, etc., it can cause damage to renal tubular epithelial cells leading to cancerous cells, which can lead to the occurrence of kidney cancer. If you have kidney cysts, it is recommended to consult a doctor in time and listen to professional advice for treatment.