World Lymphoma Awareness Day 2025: Understanding the Cancer of the Lymphatic System

Lymphoma is a type of blood cancer that begins in the lymphatic system that is an essential part of the body’s immune defence. In many cases, the symptoms of lymphoma, such as fatigue, fever, or swollen lymph nodes, are mistaken for minor illnesses, which can lead to delays in diagnosis and treatment. With cases rising every year, there is a growing need for public awareness and timely medical attention. World Lymphoma Awareness Day highlights the importance of recognising the signs early, spreading awareness, and supporting ongoing research. To understand this better, the blog explores what lymphoma is, its common symptoms, available treatments, and why global attention on this disease matters now more than ever. Let us begin by learning about World Lymphoma Awareness Day.

History and Theme of World Lymphoma Awareness Day

World Lymphoma Awareness Day is observed every year on 15 September. It was first launched in 2004 by the Lymphoma Coalition, a global network of lymphoma patient organisations. The aim was to raise public awareness about lymphoma, promote early diagnosis, and support patients and caregivers across different countries.

Since its launch, the day has grown into a global movement, encouraging open conversations about lymphoma and highlighting the need for stronger research and healthcare support. Each year, the campaign focuses on a specific theme that reflects ongoing challenges or goals in the fight against this cancer.

What is Lymphoma?

Lymphoma is a form of cancer that begins in the lymphatic system, which plays a key role in the body’s immune defence. This system includes the lymph nodes, lymph vessels, spleen, tonsils, and bone marrow. It helps fight infections and filters harmful substances from the body.

In lymphoma, white blood cells called lymphocytes start to grow and multiply uncontrollably. These abnormal cells can build up in the lymph nodes or other parts of the body, affecting how the immune system functions. Over time, this can lead to swelling, fatigue, and other symptoms that are often mistaken for minor illnesses.

What are the Different Types of Lymphoma?

Lymphoma is mainly divided into two major types, Hodgkin lymphoma and Non-Hodgkin lymphoma. These types differ in how they spread, how they look under a microscope, and how they respond to treatment.

Hodgkin Lymphoma (HL)

Hodgkin lymphoma is identified by the presence of a distinctive cancer cell called the Reed-Sternberg cell, which is not found in other types of lymphoma. It usually starts in a group of lymph nodes and tends to spread in a predictable, step-by-step pattern to nearby nodes. Common areas where it may begin include the neck, chest, or underarms.

This type is more common in younger adults and is generally considered one of the more treatable forms of cancer, especially when diagnosed early. People with Hodgkin lymphoma often respond well to treatment, and long-term remission is possible.

Non-Hodgkin Lymphoma (NHL)

Non-Hodgkin lymphoma is a broader category that includes many different subtypes, some slow-growing and others aggressive. It can begin in lymph nodes anywhere in the body or in organs such as the stomach, intestines, or skin. Unlike Hodgkin lymphoma, it does not spread in a fixed pattern and may affect multiple areas at once.

Subtypes of NHL are based on the specific kind of lymphocyte involved (B cells or T cells) and how fast the cancer grows. Because there are many forms of NHL, the symptoms, treatment options, and outcomes can vary widely.

What are the Warning Signs of Lymphoma?

Lymphoma can be difficult to detect in its early stages because many of its symptoms are mild or similar to common illnesses. However, being aware of the warning signs can help in seeking medical attention at the right time. Common signs to watch for include:

• Swollen lymph nodes: Painless swelling in the neck, underarms, or groin that lasts for weeks or continues to grow. The nodes may feel firm or rubbery and do not usually hurt.
• Unexplained weight loss: Sudden weight loss of more than 10 percent of body weight over a short period, without changes in diet or exercise.
• Persistent fatigue: Constant tiredness that does not improve with rest or sleep and may interfere with daily tasks.
• Fever without infection: Repeated low-grade fevers that come and go, with no clear cause such as flu or other infection.
• Night sweats: Heavy sweating during sleep, often soaking through clothes and bedding, sometimes without a fever.
• Itchy skin or rash: Ongoing itching without a visible rash or with mild skin changes. Some forms of lymphoma affecting the skin may cause red or scaly patches.
• Shortness of breath or chest discomfort: May occur if lymph nodes in the chest area are enlarged, putting pressure on the lungs or airways.
• Frequent infections: A weakened immune system can lead to repeated infections or infections that take longer to clear up.

If any of these symptoms persist for more than two weeks or continue to worsen, it is important to consult a doctor.

How is Lymphoma Diagnosed?

Diagnosing lymphoma involves several steps. Since its symptoms often resemble those of other common conditions, doctors use a combination of physical exams, imaging tests, lab investigations, and tissue biopsies to confirm the diagnosis and determine the type and stage of the disease.

Medical History and Physical Examination

The process usually begins with a detailed discussion about symptoms, duration, and general health. The doctor may ask about:

• Swelling in the neck, underarms, or groin
• Unexplained fever, weight loss, fatigue, or night sweats
• Past infections or medical conditions

A physical examination is done to check for swollen lymph nodes or an enlarged spleen or liver.

Blood Tests

Although blood tests cannot confirm lymphoma, they provide useful information about overall health and help detect abnormalities that may suggest cancer activity.

• Complete Blood Count (CBC): Checks the number of red blood cells, white blood cells, and platelets. Lymphoma may cause low counts due to bone marrow involvement.
• Erythrocyte Sedimentation Rate (ESR): May be elevated in lymphoma, indicating inflammation.
• Lactate Dehydrogenase (LDH): High levels may suggest rapid cell turnover and can indicate a more aggressive form of the disease.
• Liver and Kidney Function Tests: Help assess whether the organs are affected and if treatment can be safely given.
• Viral Screening: Tests for infections such as HIV, hepatitis B, or Epstein-Barr virus, as some are linked to certain types of lymphoma.

Imaging Tests

Imaging studies are essential to locate enlarged lymph nodes or affected organs, evaluate the extent of disease spread, and assist with biopsy planning.

• CT Scan (Computed Tomography): Provides detailed cross-sectional images of the chest, abdomen, and pelvis to identify enlarged lymph nodes or organ involvement.
• PET Scan (Positron Emission Tomography): Detects active cancer cells by measuring how tissues absorb radioactive sugar. It is useful for staging, identifying hidden sites of disease, and evaluating treatment response.
• Combined PET-CT Scan: Offers both metabolic and structural information in one scan and is commonly used in lymphoma evaluation.
• MRI or Chest X-rays: May be used in specific cases, such as brain involvement or chest symptoms.

Lymph Node Biopsy

A biopsy is the only way to confirm lymphoma. It involves removing part or all of an affected lymph node for laboratory testing.

• Excisional or Incisional Biopsy: The preferred method, where an entire lymph node (or a large section) is surgically removed. It provides enough tissue for a complete analysis.
• Core Needle Biopsy: A large needle is used to extract a small core of tissue. This may be done under ultrasound or CT guidance.
• Fine Needle Aspiration (FNA): Uses a thin needle to collect a small number of cells. While less invasive, it may not provide enough material for an accurate diagnosis.

The biopsy sample is examined under a microscope to look for cancerous lymphocytes. Additional laboratory tests are then performed on the sample.

Bone Marrow Biopsy

If lymphoma is suspected to have spread to the bone marrow, a bone marrow biopsy is performed. A needle is used to collect a sample from the back of the pelvic bone.

• Helps determine how advanced the lymphoma is (staging).
• Especially important in cases of aggressive non-Hodgkin lymphoma or if blood tests show abnormalities.

What Treatment Options are Available for Lymphoma?

The treatment plan for lymphoma depends on various factors, including the type and stage of the disease, the patient’s age, overall health, and how aggressive the cancer is. Most cases are treated with a combination of therapies aimed at eliminating cancer cells, reducing the risk of recurrence, and relieving symptoms.

Chemotherapy

Chemotherapy is one of the most widely used treatments for both Hodgkin and non-Hodgkin lymphoma. It involves the use of drugs that target rapidly growing cells. These drugs are usually given in cycles through a vein or in tablet form, often over several months. Side effects may include fatigue, nausea, hair loss, and increased susceptibility to infections. The exact combination and number of cycles depend on the lymphoma subtype and the patient’s overall health.

Radiation Therapy

This approach uses high-energy rays to destroy cancer cells in a specific area. It is often recommended for early-stage lymphoma or when the disease is confined to one or two regions. Radiation may be given alone or after chemotherapy. Although modern techniques are precise, side effects such as skin changes, tiredness, or swallowing discomfort (if the chest or neck is treated) may occur.

Targeted Therapy

Targeted therapy focuses on specific molecules or proteins that help cancer cells grow. These treatments are designed to attack lymphoma cells more precisely than standard chemotherapy. One common example is monoclonal antibodies, which attach to specific markers on lymphoma cells and destroy them. Targeted therapy is often used in certain types of non-Hodgkin lymphoma and may be combined with chemotherapy to improve outcomes.

Immunotherapy

Immunotherapy helps the immune system recognise and attack lymphoma cells. One method is checkpoint inhibitors, which remove the barriers that prevent immune cells from attacking cancer. Another more advanced method is CAR T-cell therapy, where a patient’s own immune cells are modified in a lab to better fight cancer. These therapies are usually used for relapsed or difficult-to-treat lymphomas. Some patients may experience side effects like fever, low blood pressure, or inflammation, especially in the early stages of treatment.

Stem Cell Transplant

Stem cell transplant, also known as a bone marrow transplant, allows doctors to use high-dose chemotherapy to destroy lymphoma cells and then replace the damaged bone marrow with healthy stem cells. The stem cells may come from the patient (autologous transplant) or a donor (allogeneic transplant). This option is typically reserved for patients with aggressive or relapsed disease. Recovery can be intensive, and there is a risk of complications, but it may lead to long-term remission in some cases.

Active Surveillance

For certain slow-growing lymphomas that are not causing symptoms, immediate treatment might not be necessary. In these cases, doctors may suggest active surveillance, also known as watchful waiting. Patients are monitored closely through regular check-ups, blood tests, and scans. Treatment is only started if the disease begins to progress or symptoms develop. This approach helps avoid side effects from early treatment when it may not be needed.

Supportive Care

Alongside active treatment, supportive care focuses on improving comfort and managing side effects. It includes medication to relieve pain, prevent infections, control nausea, and address fatigue. Nutritional support, counselling, and physical rehabilitation may also be included to help patients cope better during and after treatment.

How Can You Do Your Part This World Lymphoma Day?

World Lymphoma Awareness Day offers an opportunity to raise awareness, support those affected, and contribute to early recognition efforts. Here are some practical ways to get involved:

• Learn and share information: Read about lymphoma and share key facts with friends, family, or on social media to help others understand its symptoms and risks.
• Use social media for awareness: Post informative content, share survivor stories, or use official hashtags to reach a wider audience online.
• Take part in community events: Attend or support awareness walks, webinars, or health talks organised by hospitals or advocacy groups.
• Support fundraising initiatives: Contribute to or organise donation drives that fund research, patient support programmes, or awareness campaigns.
• Wear a symbol of support: The green ribbon is a recognised symbol for lymphoma awareness. Wearing it or green clothing helps spark conversations and show solidarity.

Each of these actions, even if small, helps create greater visibility for lymphoma and encourages earlier diagnosis and better outcomes.

Final Words

World Lymphoma Awareness Day urges people to pay closer attention to symptoms that are often overlooked, such as swollen lymph nodes that do not go away, unexplained weight loss, night sweats, or recurring fevers. These signs may not always feel urgent, but they can point to something serious. Instead of waiting for symptoms to worsen or trying to make sense of them alone, it is better to speak to someone who understands this disease. At Max Hospital, haematologists are available to evaluate these concerns and offer proper medical guidance. Book a consultation to get clarity on the ongoing symptoms.

Frequently Asked Questions

Can lymphoma come back after treatment?

Yes, lymphoma can sometimes return after treatment. This is known as a relapse. The chances of recurrence depend on the type of lymphoma, stage at diagnosis, and how the body responded to treatment. Regular follow-ups help detect any return early.

Is lymphoma contagious or caused by an infection?

Lymphoma is not contagious. You cannot catch it from someone who has the disease. However, certain infections, such as Epstein-Barr virus or HIV, may slightly increase the risk of developing lymphoma, especially in people with weaker immune systems.

How long does treatment for lymphoma usually last?

The duration of treatment varies depending on the type and stage of lymphoma. Some may require a few months of chemotherapy or radiation, while others may need longer treatment plans. The doctor will design a schedule based on the specific case.

Will I need to stay in the hospital during treatment?

Not always. Many treatments, like chemotherapy, can be done on an outpatient basis. However, in some cases, hospital stays may be required for stronger treatments, managing side effects, or if the patient’s immune system becomes very weak.

Are there any long-term side effects of lymphoma treatment?

Some treatments may lead to long-term effects, such as fatigue, hormonal changes, or increased risk of other health issues. These vary from person to person. Doctors monitor such effects during follow-up visits and suggest ways to manage them.