Hi, my understanding is that a blood cancer such as lymphoma must be treated with chemotherapy. Surgery is not an option, even if the cancer is localised to one area.
Why then is radiation used? Isn't targeting the node with radiation essentially the same as removing it with surgery?
In most cases, lymphoma is considered a "systemic" disease at diagnosis. Therefore, the treatment for lymphoma must be able to treat the entire body. As surgery and radiation therapy are "local" therapies, they are not sufficient, by themselves, to potentially cure lymphoma.
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