Non-Hodgkin’s lymphoma is an uncommon form of cancer that develops in the lymphatic system, consisting of glands and vessels which move lymph around the body.
Lymph is a fluid that contains white blood cells, which are vital for fighting off an infection.
The NHS explains that symptoms of the disease include night sweats, unintentional weight loss, and breathlessness.
However, the most common symptom is swelling of the lymph nodes in the neck, armpit, or groin.
You shouldn’t panic if your lymph nodes swell because they may also swell for many other, more common, reasons. They often swell up when the body is fighting other infections, the health body states.
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