Comprehensive Overview of Lymphoma
Lymphoma is a type of cancer that begins in the lymphatic system, which is part of the body’s immune system. The lymphatic system includes lymph nodes, the spleen, bone marrow, and lymphatic vessels that help fight infection.
Lymphoma develops when certain white blood cells called lymphocytes grow uncontrollably and form tumors in lymph nodes or other tissues.
This guide explains what lymphoma is, lymphoma symptoms, types of lymphoma, causes, and treatment.
This information is educational only and not medical advice.
What Is Lymphoma
Lymphoma begins when lymphocytes develop DNA changes that allow them to grow uncontrollably and avoid normal cell death.
These abnormal cells build up in:
- lymph nodes
- spleen
- bone marrow
- lymphatic tissues
Unlike leukemia, lymphoma usually forms solid tumors in lymph nodes.
Lymphoma can spread through:
- lymphatic vessels
- bloodstream
Common areas affected include:
- neck lymph nodes
- armpits
- groin
- chest
- abdomen
How Lymphoma Develops
Lymphocytes normally protect the body from infection.
Healthy lymphocytes:
- grow in a controlled way
- fight infections
- die when they are no longer needed
Lymphoma cells:
- grow continuously
- survive longer than normal cells
- accumulate in lymph nodes
- form tumors
This can interfere with the immune system.
Types of Lymphoma
There are two main types of lymphoma.
Hodgkin Lymphoma
Hodgkin lymphoma is identified by special cells called Reed-Sternberg cells.
This type often begins in lymph nodes in the neck or chest.
Hodgkin lymphoma often responds well to treatment.
Non-Hodgkin Lymphoma
Non-Hodgkin lymphoma is more common.
It includes many subtypes.
These cancers may grow:
- slowly
- moderately
- rapidly
Non-Hodgkin lymphoma can develop in lymph nodes or organs.
Lymphoma Symptoms
Lymphoma symptoms often develop gradually.
Early lymphoma symptoms may be mild.
Common lymphoma symptoms include:
- swollen lymph nodes
- fatigue
- fever
- night sweats
- weight loss
Persistent symptoms should be medically evaluated.
Lymph Node Symptoms
Swollen lymph nodes are a common sign.
Symptoms include:
- lumps in the neck
- lumps in the armpits
- lumps in the groin
Lymph nodes are usually:
- painless
- firm
- slowly enlarging
Systemic Symptoms (B Symptoms)
Some lymphoma symptoms affect the whole body.
These are called B symptoms.
They include:
- unexplained fever
- night sweats
- unexplained weight loss
B symptoms can indicate more active disease.
Immune System Symptoms
Lymphoma affects immune function.
Symptoms include:
- frequent infections
- slow healing
- persistent illness
Symptoms of Advanced Lymphoma
Advanced lymphoma may affect organs.
Spleen Enlargement
Symptoms include:
- fullness in abdomen
- discomfort after eating small meals
Chest Involvement
Symptoms include:
- cough
- chest pressure
- breathing difficulty
Bone Marrow Involvement
Symptoms include:
- fatigue
- anemia
- infections
- bleeding
Causes and Risk Factors
Lymphoma develops from genetic changes and environmental factors.
Risk factors include:
Age
Risk increases with age for many types.
Immune System Disorders
Weakened immune systems increase risk.
Infections
Certain infections increase lymphoma risk.
Examples include:
- Epstein-Barr virus
- HIV
Chemical Exposure
Some chemicals increase risk.
How Lymphoma Is Diagnosed
Diagnosis may include:
- physical examination
- blood tests
- imaging scans
- lymph node biopsy
A biopsy confirms lymphoma.
Lymphoma Stages
Stage 1
Cancer limited to one lymph node area.
Stage 2
Cancer in multiple lymph node areas on one side of the body.
Stage 3
Cancer on both sides of the diaphragm.
Stage 4
Cancer has spread to organs.
Lymphoma Treatment
Treatment depends on lymphoma type.
Chemotherapy
Chemotherapy kills lymphoma cells.
Radiation Therapy
Radiation targets lymphoma tumors.
Targeted Therapy
Targets lymphoma cell markers.
Immunotherapy
Helps immune cells attack lymphoma.
Stem Cell Transplant
Replaces damaged bone marrow.
Lymphoma Prevention
Most lymphoma cannot be prevented.
Risk may be reduced by:
- avoiding infections
- maintaining immune health
- avoiding chemical exposure
When Symptoms Need Medical Evaluation
Medical evaluation is important if symptoms include:
- swollen lymph nodes lasting more than two weeks
- persistent fever
- night sweats
- unexplained weight loss
- persistent fatigue
Early diagnosis improves outcomes.
Medical References
National Cancer Institute
https://www.cancer.gov/types/lymphoma
American Cancer Society
https://www.cancer.org/cancer/lymphoma.html
Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/lymphoma
