Lymphomas start in the lymphatic system, the network of vessels that runs throughout the body carrying white blood cells and other important immune system cells. This system includes the spleen, thymus, lymph nodes (small glands found along the vessels of the lymphatic system that filter out bacteria and other toxins) and lymphatic vessels (a network of thin tubes that carry lymph and white blood cells). Lymph nodes respond to infections by releasing white blood cells called lymphoid cells (also known as lymphocytes) into the blood stream to fight it off. Among others, two specific types of lymphoid cells are found in this system: B-cells, which generate proteins called antibodies that protect us from infection, and T-cells, which directly kill viruses.
In England, Lymphoma in children accounts for around 10% of all cancers diagnosed in children (1) . Lymphomas are rare before the age of two and incidence increases with age thereafter such that lymphomas and reticuloendothelial neoplasms account for nearly a fifth (18%) of all childhood cancers diagnosed in 10 – 14-year-olds in England (1) .
There are two main types of lymphoma:
Hodgkin lymphoma accounts for around 44% of all lymphomas diagnosed in children in England1. Although the cure rate is high, it’s easily mistaken for other diseases, like glandular fever. Finding a simple way to diagnose it earlier would help children avoid unnecessary illness, and maybe mean less intensive treatment. Hodgkin lymphoma is distinguished from other types of lymphoma by the type of cancer cell formed – the Reed-Sternberg cell – which is not found in any other blood cancer.
Proteins secreted by tumour cells can be detected in the blood. We’re testing whether this can be used in the early detection of tumours.
Prof Ruth Jarrett, University of Glasgow.
Professor Ruth Jarrett, who we’re funding to find a simple way to diagnose Hodgkin lymphoma earlier in children and avoid unnecessary illness.
Childhood non-Hodgkin lymphoma includes all types of lymphoma except Hodgkin lymphoma. It is the most common lymphoma in children (1) . There are two main types of non-Hodgkin lymphoma: B-cell non-Hodgkin lymphoma (including Burkitt lymphoma), which usually arises in lymph nodes of the neck or the abdomen, and T-cell non-Hodgkin lymphoma, which arises in the thymus which is located in the chest above the heart. This difference is important as B-cell and T-cell non-Hodgkin lymphomas require different types of chemotherapy treatment. Symptoms of non-Hodgkin lymphomas in children generally include painless swollen lymph nodes that can be seen or felt under the skin.
Molly was diagnosed with non-Hodgkin lymphoma when she was eight years old.
Because I’ve gone through this at such a young age, I feel I have grown up much more quickly than anyone else my age. I am very aware of when I feel ill and towards the end of my treatment I began to suffer with anxiety. Funding childhood cancer research is so important because research works and more children’s lives are being saved because of it.
Molly, 18 years old.
|The most common symptoms for Hodgkin lymphoma in children include:|| |
Non-Hodgkin Lymphoma cancer symptoms in children include:
Thanks to breakthroughs in research, five year survival from lymphoma in children have increased over the years. However, there are still differences in the survival rate for the different types of childhood lymphomas.
Hodgkin lymphoma – The 5-year survival rate for Hodgkin lymphoma is over 95% in England (1) , Almost all children with this cancer can be cured. It is important to note that survival rates vary depending on the stage of Hodgkin lymphoma.
Non-Hodgkin lymphoma – The majority of children can be treated successfully, with an overall five-year survival rate of around 87% in England (1).
(1) Childhood Cancer Statistics, England Annual report 2018, Public Health England