
Blood cancer is a group of cancers that starts in the blood and affects the body's metabolism, leading to muscle and fat loss. Cancer cells can change one's appetite and how much energy the body burns, resulting in muscle and fat loss. Tumors in the bones can also cause muscle weakness and bone pain. Blood cancer patients may experience weight loss, fatigue, frequent infections, easy bruising, bleeding, night sweats, lumps, and swellings. Kidney cancer, on the other hand, is a group of cancers that starts in the kidneys and can lead to tumors. Symptoms may include blood in the urine, fever, weight loss, tiredness, and back pain. Risk factors for kidney cancer include smoking, obesity, high blood pressure, and family history. Treatment for kidney cancer may involve surgery, drugs, or physical activity.
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What You'll Learn
- Blood cancer symptoms vary depending on the type, with some common signs including unexplained weight loss, fatigue, and muscle dysfunction
- Acute blood cancer is caused by a very high level of white blood cells, which can lead to sudden illness and neurological symptoms
- Cancer-associated muscle weakness is a paraneoplastic syndrome, causing muscle wasting and cachexia, for which there is currently no treatment
- Kidney cancer symptoms include blood in urine, a lump in the abdomen, and back pain
- Risk factors for kidney cancer include smoking, obesity, high blood pressure, genetics, and kidney disease

Blood cancer symptoms vary depending on the type, with some common signs including unexplained weight loss, fatigue, and muscle dysfunction
Blood cancer symptoms vary depending on the type of blood cancer, whether it's leukaemia, lymphoma, myeloma, MDS, MPN, or another form of blood cancer. Some symptoms may also appear differently depending on the person's skin tone. For instance, bruising, a common symptom of blood cancer, generally starts as red patches that get darker over time.
Some common signs of blood cancer include unexplained weight loss, fatigue, and muscle dysfunction. Weight loss can be caused by cancer cells altering the body's metabolism and reducing muscle and fat. Muscle dysfunction can be caused by abnormal blood cells building up in the spleen, which can also cause loss of appetite and nausea.
Other symptoms of blood cancer include frequent infections, fever or chills, night sweats, and shortness of breath. In some cases, blood cancer may cause neurological symptoms such as visual changes, confusion, vomiting, loss of muscle control, seizures, and headaches. These symptoms are often the result of a very high level of white blood cells, which can lead to a medical emergency known as leukostasis.
It is important to note that not everyone will experience the same symptoms, and some people may have additional symptoms that are not commonly associated with blood cancer. Blood cancer symptoms can also be vague and easy to overlook, so it is important to pay attention to any changes in your body and consult a medical professional if you have any concerns.
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Acute blood cancer is caused by a very high level of white blood cells, which can lead to sudden illness and neurological symptoms
Blood cancer is a group of cancers that affect the blood and bone marrow, which is the spongy tissue inside bones where blood cells are made. Acute blood cancer, such as acute myeloid leukaemia (AML), is caused by a very high level of white blood cells, which can lead to a person becoming very unwell very suddenly. This condition is known as leukostasis or blast crisis.
Leukostasis is a medical emergency and requires immediate medical attention. Symptoms of leukostasis include breathing problems and neurological issues such as visual changes, confusion, vomiting, loss of muscle control, and seizures. The high level of white blood cells in acute blood cancer can cause a range of other symptoms, including unexplained weight loss, fatigue, frequent infections, easy bruising, bleeding, night sweats, and shortness of breath.
The high level of white blood cells in acute blood cancer can also lead to muscle loss. Cancer-associated muscle weakness or wasting is a common problem in cancer patients, especially those with advanced disease and bone metastases. Tumour cells can metastasize to bone, disrupting normal bone remodelling and resulting in muscle weakness and wasting. This can be caused by a combination of reduced muscle mass and reduced muscle function. Additionally, cancer and its treatment can cause eating and drinking difficulties, further contributing to muscle loss.
While acute blood cancer itself does not directly cause kidney damage, the high levels of white blood cells and resulting symptoms can lead to a range of complications that may indirectly affect kidney function. However, cancer treatments, including certain drugs and chemotherapy, can be toxic to the kidneys and cause kidney damage. Therefore, while acute blood cancer may not directly cause kidney damage, the condition and its treatments can potentially impact kidney health and function.
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Cancer-associated muscle weakness is a paraneoplastic syndrome, causing muscle wasting and cachexia, for which there is currently no treatment
Cancer-associated muscle weakness is a paraneoplastic syndrome characterised by muscle wasting and cachexia. Cachexia is a multifactorial syndrome that is common in advanced malignancy, causing severe wasting due to loss of skeletal muscle mass and reduction in muscle function. It is present in about 50% of cancer patients, with a higher prevalence in patients with gastrointestinal and lung cancers. Cachexia is responsible for about 20% of cancer-related deaths and significantly impairs quality of life.
Muscle wasting is a consequence of physiological changes or pathology, leading to progressive loss of skeletal muscle mass and strength. It is associated with numerous diseases, including cancer, organ failure, infection, and ageing-related diseases. Cachexia-inducing tumours secrete factors such as cytokines, directly inducing muscle wasting and affecting other organs, which aggravates the cachexia syndrome.
Cancer-associated muscle weakness is a significant challenge in clinical research, with high mortality rates and increased toxicity from cancer treatments. There is currently no approved treatment for cachexia. While some therapeutic strategies have shown partial effectiveness, nutritional, metabolic, and pharmacological interventions have had minimal success in reversing the progressive loss of muscle mass and function.
Natural compounds, such as resveratrol, have been explored for their potential to prevent muscle wasting and cachexia-associated cancers. Resveratrol, found in grapes, blueberries, and peanuts, has been shown to improve mitochondrial biogenesis and inhibit muscle wasting by activating specific pathways. However, further investigation into the causes of cancer-induced muscle wasting is necessary to develop effective interventions.
While this answer focuses on cancer-associated muscle weakness, it is important to note that muscle loss and kidney damage can also be related to kidney cancer and its treatment. Kidney cancer patients are encouraged to be physically active to maintain muscle strength and overall health. Additionally, certain blood cancers can cause muscle loss and may lead to kidney damage due to abnormal blood cells building up in the spleen.
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Kidney cancer symptoms include blood in urine, a lump in the abdomen, and back pain
Blood cancer is a group of cancers that affect the blood-forming tissues, such as the bone marrow, or cells in the blood itself. Blood cancers include leukaemia, lymphoma, and myeloma, and symptoms vary depending on the type of blood cancer. Blood cancers can cause muscle loss, and some symptoms include unexplained weight loss, pain in the bones, joints, or abdomen, and swelling.
Kidney cancer, on the other hand, is a separate type of cancer that originates in the kidneys and can lead to tumours. It is important to distinguish between blood cancer and kidney cancer, as their symptoms, treatments, and prognoses can differ significantly.
Kidney cancer often produces no noticeable symptoms in its early stages, and it is usually detected during imaging tests for other issues. However, as the tumour grows, symptoms may begin to appear. Some of the key symptoms of kidney cancer include:
- Blood in urine (hematuria): This can be detected through a urinalysis test, even if the blood is not visible to the naked eye.
- A lump or mass in the abdomen: A doctor may examine the patient to feel for any lumps or swelling in the back or neck area.
- Back pain or flank pain: This pain may be severe enough to require radiation therapy or pain management.
Other possible symptoms of kidney cancer include high blood pressure, loss of appetite, weight loss, fever, and general malaise. It is important to note that these symptoms can also be caused by other conditions, and a proper diagnosis should be made by a medical professional.
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Risk factors for kidney cancer include smoking, obesity, high blood pressure, genetics, and kidney disease
Blood cancer can cause muscle loss, also known as cancer-associated muscle weakness. This is a major paraneoplastic syndrome, which ranges from muscle weakness in the absence of weight loss to profound muscle wasting and cachexia. Cachexia is a common paraneoplastic syndrome characterised by severe wasting due to the loss of skeletal muscle mass. Tumour cells commonly metastasize to bone in advanced cancer, disrupting normal bone remodelling and resulting in morbidity that includes muscle weakness.
Kidney cancer, on the other hand, is associated with several risk factors, including:
Smoking
Smoking increases the risk of renal cell carcinoma (RCC), the most common type of kidney cancer. The risk is related to the amount smoked and decreases slowly over time if one quits smoking.
Obesity
Being overweight or obese increases the risk of kidney cancer due to changes in certain hormones, particularly in women. Obesity is a risk factor for both kidney and thyroid cancer.
High blood pressure
High blood pressure is a known risk factor for kidney disease and kidney cancer. It damages the kidneys, and the risk is not lowered by taking medication for high blood pressure.
Genetics
Some people inherit gene changes from their parents that increase their risk of kidney cancer. This is called hereditary or familial kidney cancer, and it often affects both kidneys. People with von Hippel-Lindau disease, for example, have an increased risk of developing clear cell RCC due to mutations in the VHL gene.
Kidney disease
People with advanced kidney disease, especially those requiring long-term dialysis, have a higher risk of kidney cancer. This is because their kidneys do not work very well, increasing the chances of uncontrolled cell growth.
It is important to note that having one or more risk factors does not guarantee that an individual will develop kidney cancer. Similarly, not having any known risk factors does not rule out the possibility of developing the disease.
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Frequently asked questions
Blood cancer itself does not cause kidney damage, but it can lead to muscle loss. Kidney damage is caused by kidney cancer, which is a group of cancers that start in the kidneys. The main types of kidney cancer are renal cell cancer (RCC), transitional cell cancer (TCC), and Wilms' tumor. Blood cancers include leukaemia, lymphoma, myeloma, MDS, and MPN.
Symptoms of kidney cancer include blood in the urine, a lump in the abdomen, and back pain. Fever, weight loss, and tiredness may also occur.
Symptoms of blood cancer include unexplained weight loss, fatigue, frequent infections, easy bruising or bleeding, night sweats, shortness of breath, and unusual lumps or swellings.











































