Complications after interventional treatment for renal cancer

Written by Zeng Zhong
Urology
Updated on May 27, 2025
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Post-intervention complications of renal cancer can include hematuria, lower back pain, and tumor recurrence. Hematuria is indirect and painless, visible to the naked eye. Renal cancer often accompanies renal colic, which is due to the formation of ureteral blood clots. Blood clots from renal cell carcinoma can form a ribbon-like shape through the ureter, and the degree of hematuria is not related to the size of the renal cell carcinoma. Renal cell carcinoma sometimes presents persistent microscopic hematuria. Lower back pain is a common symptom, often an intermittent dull pain, usually due to the enlargement of the kidney tumor. When the tumor invades surrounding organs and the psoas major muscle, the pain is heavy and persistent.

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Written by Zeng Zhong
Urology
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Can kidney cancer patients eat mushrooms?

Patients with kidney cancer can eat mushrooms. They should pay special attention to their diet in daily life, as some foods can harm their body after consumption. It is advisable for kidney cancer patients to eat foods that enhance vitality and avoid spicy and stimulating foods, foods high in iodine, seafood, and also to abstain from drinking alcohol and smoking. Kidney cancer patients generally have less physical activity and poorer digestive functions, so they should primarily consume foods that are light and easy to digest. The diet of kidney cancer patients must ensure nutritional sufficiency and pay attention to a balanced diet, incorporating starchy foods like carrots and peas, as well as foods that enhance the body's anti-cancer abilities, such as mushrooms and shiitake mushrooms.

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Written by Zeng Zhong
Urology
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Is vomiting severe in renal cancer?

Patients with kidney cancer who experience vomiting are facing a serious situation because nausea and vomiting are common symptoms among late-stage cancer patients and are often more distressing than the pain from cancer itself. Nausea and vomiting may be side effects of treatment, or they might be caused by cancer invading the digestive and nervous systems. People who are ill often feel anxious, which is also one of the reasons causing vomiting. Cancer patients need to pay extra attention to their diet, as this can greatly aid their treatment. In daily life, it is beneficial to consume more fresh fruits, vegetables, whole grains, and legumes, focusing on light meals to ensure a balanced diet and supplement various nutrients.

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Written by Xu Chun Hua
Urology
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How is kidney cancer diagnosed?

Hematuria, pain, and lumps are the main symptoms of kidney cancer. If one or two of these symptoms appear, the possibility of kidney cancer should be considered. About half of the patients are found to have incidental kidney cancers, also known as asymptomatic kidney cancers, during physical examinations through incidental findings on ultrasound or CT scans. Some may show early symptoms of metastasis making the diagnosis quite challenging. The preoperative diagnosis of kidney cancer relies on the results of medical imaging examinations such as ultrasound, X-rays, and CT scans. CT scans have a very high confirmation rate for kidney cancer and are currently the most reliable imaging method for diagnosing kidney cancer.

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Written by Zhou Qi
Nephrology
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Can kidney cancer patients eat eggs?

Patients with kidney cancer can eat eggs. Kidney cancer is a malignant tumor of the kidney, originating from the epithelial cells of the renal tubules. Although this disease is a malignant tumor, the patient's body still needs nutrients. Therefore, high-protein foods can be consumed by patients, and they should maintain a protein intake roughly the same as that of healthy individuals. Eggs are rich in protein, with each egg containing about seven to eight grams of protein. Kidney cancer patients can eat eggs without worsening their condition or causing the disease to spread. The folk saying that some foods are "stimulating" is not scientifically founded. Currently, there is no clear evidence in medicine to support the claim that eggs and beef are "stimulating."

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Written by Zou De Bo
Urology
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Kidney cancer thrombus

Tumor thrombus is one of the common complications of tumors, and refers to cancer cells in blood vessels or lymphatic vessels similar to blood clots, i.e., cancer cells clustering together, invading the vessels, and causing abnormalities in blood coagulation function, leading to disorders in blood circulation and abnormal coagulation with clustered cancer cells. Generally, the risk of tumor thrombus formation is very high, and patients with tumor thrombus have much worse treatment outcomes than those without. Renal cancer is also a tumor commonly associated with tumor thrombus. Once a tumor thrombus occurs, it indicates that the surgery might be staged quite late, and thus, its treatment results are also relatively poor.