St Jude system of Staging:-
Stage 1 : Disease is confined to single tumour (Extra nodal)
or single anatomic area
excluding abdominal /mediastinal tumour.
Stage 11 :Single tumour extra-nodal or regional involvement.
2 or more nodal areas same side of diaphragm
2 single extranodal areas same side of diaphragm
Staege 111:
Prmary Abdominal extensive disease.
Primary Midiastinal , thymic, pleural
Two or more nodal areas above or below the diaphragm
Two single tumours extra nodal on opposite side of diaphragm.
Stage 1v: Any CNS or bone marrow ivolvement.
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