What symptom can a tumor grow on kidney have

Renal tumors are classified into benign and malignant tumors. Benign renal tumors, mainly including renal hamartoma, renal fibroma, renal adenoma, etc., are often asymptomatic in clinical practice, most of them are accidentally discovered by pyelography or ultrasound examination, and a few patients may cause macroscopic hematuria or acute abdomen due to hemorrhage or rupture within the tumor, sometimes requiring emergency surgery. Renal cell carcinoma is the most common type of renal cancer. about half of the patients are found in physical examination. The typical clinical symptoms of advanced renal cancer are hematuria, low back pain and abdominal mass. Some patients may show paraneoplastic syndrome.