Changes

===Staging===

===Staging===

A group staging system is used for lymphoma(Owen, 1980):

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 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 II - Involvement of many lymph nodes in a regional area (+/- tonsils)