Imaging suggests that there is a shadow on the kidney, there is a possibility of malignant tumor, but it may also be kidney cysts, stones, etc. It is recommended to cooperate with the doctor to carry out other tests to confirm the diagnosis. Imaging suggests the presence of occupying lesions in the kidney, etc., which may be renal tumors (e.g., benign tumors such as malignant tumors such as misshapen tumors, malignant tumors such as clear cell carcinomas, etc.), renal cysts (e.g., infected abscesses, simple renal cysts), renal calculi, and other lesions. The diagnosis of renal tumor requires comprehensive judgment: 1. Clinical symptoms: the main clinical manifestations of kidney cancer are lumbar pain, hematuria, abdominal mass, but these clinical symptoms are commonly found in advanced kidney cancer, most of the early stage patients will not have typical symptoms, and asymptomatic kidney cancer can reach more than 50%. In addition, some patients may have renal cancer paraneoplastic syndrome, while patients with metastatic disease may have metastatic symptoms, such as bone fracture, bone pain, cough and so on. 2. Auxiliary examination: mainly rely on imaging examination for screening and diagnosis. Among them, ultrasonography is an important method. If renal tumor is suspected, further CT examination is needed to make a clear diagnosis. Therefore, it is recommended to further improve the enhanced CT examination. It is recommended to go to regular hospitals to evaluate the condition and follow the doctor’s instructions to avoid delaying the condition.