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===Staging===
===Staging===
−A staging system is used for lymphoma (Owen, 1980):
+* Stage I - Involvement limited to a single node or lymphoid tissue in a single organ (excluding bone marrow)
+* Stage II - Involvement of many lymph nodes in a regional area (+/- tonsils)
+* Stage III - Generalised lymph node involvement
+* Stage IV - Liver and/or spleen involvement (+ stage III)
+* Stage V - Manifestations in the blood and involvement of bone marrow and/or other organ systems (+/-stages I-IV)
+Each stage is then subclassifed as a) without systemic signs or b) with systemic signs.
==Treatment==
==Treatment==