The lymphatic system
The lymphatic system is the body's natural defence against infection.
It is made up of a collection of lymph nodes connected together by lymphatic vessels.
Small lymph nodes are found mainly in the neck, under the armpits and in the groin. Other nodes are found in the chest and abdomen.
A clear fluid called lymph is produced in the body's tissues and circulates throughout the body via the lymphatic system.
It contains cells known as lymphocytes that act as a defence against infection. If, for example, you have a sore throat you may notice and the nodes in your neck become enlarged, this is a sign that your body is fighting against the infection.
Non-Hodgkin's lymphomas are cancers of the lymphatic system.
There are two main types of lymphoma: non-Hodgkin's lymphomas and Hodgkin's disease.
Lymphoma cells have the ability to spread beyond the original site. They usually spread first to other lymph nodes/glands in the lymphatic system, but can also enter the bloodstream which carries them to various organs.
When the cells reach a new site they may go on dividing and form a new tumour.
Non-Hodgkin’s lymphomas is one of the ten most common cancers in Hong Kong and is also common in the Asia region.
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