Multiple Myeloma: Symptoms, Causes, Diagnosis and Treatment Options
Multiple Myeloma: Symptoms, Causes, Diagnosis and Treatment Options
Introduction
Multiple myeloma is a type of blood cancer that develops from abnormal plasma cells. Plasma cells are specialized white blood cells that normally help the immune system by producing antibodies.
In multiple myeloma, abnormal plasma cells accumulate in the bone marrow and can form tumors in multiple bones. As these abnormal cells increase, they can interfere with the production of healthy blood cells and damage normal bone tissue.
The disease can affect several parts of the body, particularly the bones, kidneys and blood-forming system. Some people may have few or no noticeable symptoms initially, while others develop bone pain, fatigue, recurrent infections, anemia, kidney problems or high calcium levels.
Modern diagnosis combines blood and urine testing, bone-marrow examination, imaging and other laboratory investigations. Treatment depends on whether the disease requires immediate therapy, the patient's overall health, previous treatment and the characteristics of the myeloma.
What Is Multiple Myeloma?
Multiple myeloma is a cancer of plasma cells.
Normally, plasma cells develop from B lymphocytes and produce antibodies that help the body fight infections. In multiple myeloma, abnormal plasma cells multiply and accumulate in the bone marrow.
These cells can produce an abnormal protein called a monoclonal protein, often referred to as M protein.
The accumulation of myeloma cells can:
- Reduce production of healthy blood cells
- Weaken bones
- Cause bone lesions
- Increase calcium levels
- Affect kidney function
- Increase susceptibility to infections
Multiple myeloma belongs to a broader group of conditions known as plasma cell neoplasms, which also includes MGUS and plasmacytoma.
What Causes Multiple Myeloma?
The exact cause of multiple myeloma is not fully understood.
The disease develops through genetic and biological changes that cause plasma cells to grow abnormally. However, having a particular risk factor does not mean that a person will definitely develop multiple myeloma.
Some factors associated with increased risk include:
- Older age
- Male sex
- Personal history of MGUS
- Previous plasmacytoma
- Certain environmental exposures
- Previous radiation exposure
NCI notes that plasma-cell neoplasms occur more frequently in middle-aged and older adults.
Symptoms of Multiple Myeloma
Multiple myeloma symptoms can vary significantly.
Some patients may initially have no obvious symptoms. Others may develop problems caused by bone damage, abnormal blood counts, increased calcium, kidney dysfunction or infection.
1. Bone Pain
Bone pain is one of the common symptoms of multiple myeloma.
Pain may occur particularly in:
- Back
- Ribs
- Hips
- Skull
Myeloma can weaken bones and increase the risk of fractures.
2. Fatigue and Weakness
Abnormal plasma cells can interfere with normal red-blood-cell production.
This may cause anemia, which can result in:
- Tiredness
- Weakness
- Shortness of breath
- Dizziness
- Reduced physical stamina
3. Frequent Infections
Multiple myeloma can interfere with normal immune function.
Patients may become more susceptible to infections and may have difficulty recovering from some infections.
4. Easy Bruising or Bleeding
When the bone marrow cannot produce enough normal platelets, bruising and bleeding may occur more easily.
5. Kidney Problems
Abnormal myeloma proteins and other disease-related changes can affect kidney function.
Kidney problems may initially be detected through laboratory testing rather than obvious symptoms.
6. High Calcium Levels
Bone damage can release calcium into the bloodstream.
Hypercalcemia may cause:
- Excessive thirst
- Frequent urination
- Constipation
- Loss of appetite
- Nausea
- Weakness
- Confusion
- Dehydration
Severe hypercalcemia can become a serious medical problem.
How Is Multiple Myeloma Diagnosed?
There is no single test that identifies every case of multiple myeloma.
Doctors generally combine clinical information with laboratory testing, bone-marrow evaluation and imaging.
Blood Tests
Blood tests may evaluate:
- Complete blood count
- Calcium
- Kidney function
- M protein
- Immunoglobulins
- Free light chains
- Albumin
- Beta-2 microglobulin
These tests help identify abnormal proteins and complications associated with myeloma.
Urine Tests
Urine testing can help detect abnormal proteins produced by myeloma cells.
Bone Marrow Examination
A bone-marrow aspiration and biopsy can determine the proportion and characteristics of abnormal plasma cells.
Additional testing may include:
- Flow cytometry
- Cytogenetic testing
- FISH testing
- Molecular or genetic analysis
NCI identifies bone-marrow examination together with flow cytometry, cytogenetics and FISH as important components of multiple myeloma evaluation.
Imaging
Imaging can identify bone damage or lesions.
Depending on the clinical situation, doctors may use:
- X-rays
- CT scans
- MRI
- PET/CT
Imaging is particularly important when evaluating bone involvement.
Multiple Myeloma vs. Smoldering Myeloma
Not every abnormal plasma-cell condition requires immediate treatment.
Smoldering multiple myeloma refers to an asymptomatic form of the disease in which certain laboratory abnormalities are present but active myeloma-related organ damage has not developed.
Patients with asymptomatic disease may sometimes be monitored rather than immediately treated, depending on their clinical findings and risk.
This distinction is important because treatment decisions should be based on established diagnostic criteria rather than simply the presence of an abnormal protein or increased plasma cells.
Multiple Myeloma Treatment Options
Treatment is individualized.
Factors that can influence treatment selection include:
- Age
- Overall health
- Kidney function
- Disease characteristics
- Previous treatment
- Response to treatment
- Eligibility for stem-cell transplantation
- Presence of complications
NCI describes several approaches to multiple myeloma treatment, including chemotherapy, targeted therapy, immunotherapy, stem-cell transplantation and supportive treatment.
Targeted Therapy
Targeted therapies are designed to interfere with specific biological processes that cancer cells depend on.
In multiple myeloma, targeted treatment may be incorporated into combination treatment regimens depending on the patient's disease and treatment history.
The specific medicine or combination should be selected by the treating oncology team.
Immunotherapy
Immunotherapy uses or modifies components of the immune system to help recognize and attack cancer cells.
Several modern myeloma treatment approaches involve immune-based therapies, and these may be considered depending on the disease setting and previous treatments.
Chemotherapy
Chemotherapy uses medicines that damage or destroy rapidly dividing cancer cells.
Although newer targeted and immune-based treatments have significantly expanded the treatment options for multiple myeloma, chemotherapy can still have a role in selected treatment plans.
Stem Cell Transplantation
Stem-cell transplantation can be an important treatment option for selected patients.
The decision depends on factors such as:
- Overall health
- Age
- Disease status
- Previous treatment
- Response to initial therapy
- Ability to tolerate intensive treatment
Not every person with multiple myeloma is a candidate for transplantation.
Treatment of Relapsed Multiple Myeloma
Multiple myeloma can return after treatment.
When this happens, doctors reassess:
- Previous medicines
- Duration of response
- Current disease activity
- Genetic and laboratory findings
- Overall health
- Kidney function
- Available treatment options
Treatment may involve changing medicines, using combination therapy, targeted therapy, immunotherapy, clinical trials or other approaches.
Supportive Care in Multiple Myeloma
Supportive care is an important part of cancer treatment.
Depending on individual needs, supportive measures may address:
- Bone health
- Pain
- Anemia
- Infections
- Kidney function
- High calcium
- Treatment-related side effects
- Nutritional needs
Managing complications is an important part of multiple myeloma care because the disease can affect multiple organ systems.
When Should Someone Seek Medical Attention?
Persistent or unexplained symptoms should be evaluated by a healthcare professional.
Particularly important symptoms include:
- Persistent or severe bone pain
- Unexplained fractures
- Significant fatigue
- Recurrent infections
- Unusual bruising or bleeding
- Persistent thirst and frequent urination
- Unexplained kidney-function abnormalities
- Sudden weakness or numbness
Sudden severe back pain accompanied by leg weakness or numbness can indicate spinal cord compression and requires urgent medical evaluation.
15 Frequently Asked Questions
1. What is multiple myeloma?
Multiple myeloma is a cancer of abnormal plasma cells that commonly develops in the bone marrow.
2. Is multiple myeloma a blood cancer?
Yes. It is a hematologic cancer involving plasma cells and the bone marrow.
3. What are the common symptoms of multiple myeloma?
Common symptoms can include bone pain, fatigue, weakness, recurrent infections, anemia, easy bruising and kidney problems.
4. Can multiple myeloma cause bone pain?
Yes. Bone pain, especially in the back, ribs, hips or skull, is a common manifestation.
5. Can multiple myeloma affect the kidneys?
Yes. Myeloma-related proteins and other complications can impair kidney function.
6. What is M protein?
M protein, or monoclonal protein, is an abnormal protein produced by myeloma cells.
7. How is multiple myeloma diagnosed?
Diagnosis may involve blood tests, urine tests, bone-marrow examination and imaging studies.
8. Is a bone marrow biopsy necessary?
A bone-marrow examination is commonly an important part of confirming and characterizing multiple myeloma.
9. What is smoldering multiple myeloma?
It is an asymptomatic plasma-cell disorder with certain findings associated with myeloma but without the defining evidence of active disease.
10. Is multiple myeloma treatable?
Yes. Multiple treatment approaches are available, although treatment differs between patients and depends on disease characteristics.
11. What treatments are used for multiple myeloma?
Treatment may include targeted therapy, immunotherapy, chemotherapy, stem-cell transplantation and supportive care.
12. Can multiple myeloma return after treatment?
Yes. Myeloma can relapse, and additional treatment may be needed.
13. Is multiple myeloma always symptomatic?
No. Some people have no obvious symptoms initially, particularly in earlier or smoldering disease.
14. Can multiple myeloma cause high calcium?
Yes. Bone damage can lead to hypercalcemia, which may cause thirst, frequent urination, constipation, weakness and confusion.
15. Can multiple myeloma be cured?
There is currently no confirmed universally curative treatment for multiple myeloma, although treatment can achieve remission and control disease for many patients.
Global Medicine Information & Support by RootAid Pharma
Global Medicine Information & Support by RootAid Pharma
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