What are the clinical symptoms of kidney cancer?

Kidney cancer is a common type of malignant tumor. The symptoms of kidney cancer vary widely, so many patients delay treatment because they do not understand the symptoms of kidney cancer. So what are the symptoms of kidney cancer ? Let's take a look at how experts answer the question of kidney cancer symptoms.

Symptoms of kidney cancer include:

1. Fever, anemia, weight loss, and loss of appetite : These are common manifestations of malignant tumors. Due to the high degree of malignancy of kidney cancer, many patients have obvious systemic symptoms when they seek medical treatment, and even have metastases to the lungs and bones.

2. Lumbar pain : Lumbar pain occurs when the tumor grows and the renal capsule becomes tense, enlarged, or invades surrounding tissues. It manifests as persistent dull pain. When the tumor has invaded the nerves or lumbar spine, it can cause severe and persistent pain. The blood in the urine coagulates into cord-like blood clots in the ureter and is discharged with urine, which can cause renal colic.

3. Lumbar mass : 10% of patients can feel a mass in the waist or upper abdomen. Sometimes it can be the only symptom. The mass is hard, with an uneven or nodular surface. If the patient is emaciated or the mass is located at the lower pole of the kidney, the mass can be felt during physical examination. If the mass is fixed, it means there is infiltration around the kidney and the prognosis is poor.

4. Fever is one of the most common systemic manifestations of renal cancer. Both low-grade and high-grade fever can occur. The temperature of a persistent high-grade fever may exceed 39-40°C . Most scholars believe that fever is related to the heat source of cancerous tissue. The body temperature returns to normal after the tumor is eliminated. Fever is the only manifestation of renal cancer in a few patients. Some middle-aged and elderly patients with unexplained fever should be alert to the presence of renal cancer.

5. Varicocele : When the left renal parenchymal tumor compresses the left spermatic vein, left varicocele often occurs. Due to the presence of cancer thrombus or other obstructions in the vein, the varicose vein does not disappear after lying flat. When the inferior vena cava is invaded, lower limb edema may occur at the same time.

6. Hematuria : Hematuria is the most common symptom, occurring in about 60% of patients. It can be macroscopic hematuria and/or microscopic hematuria. Most cases are painless, and sometimes there is blood in the urine. In most cases, hematuria is caused by tumors invading the renal pelvis and calyx. Hematuria is almost the only symptom in patients with renal pelvis cancer.

7. Other symptoms: Abnormal liver function, enlarged liver and spleen, abdominal distension and pain, aversion to greasy food, ascites, poor appetite, fatigue, etc. may also occur.

The above are the symptoms of kidney cancer. Through the introduction of experts, I believe you have a certain understanding of the symptoms of kidney cancer. Once you find symptoms similar to kidney cancer, please go to a regular hospital for examination in time. If you have any questions about the symptoms of kidney cancer, please consult our online experts.

For more information, please visit the kidney cancer disease special topic at http://www..com.cn/zhongliu/sa/ or consult an expert for free. The expert will then give a detailed answer based on the patient's specific situation.