Stage III adult Hodgkin disease means the involvement of lymph node regions on both sides of the diaphragm (III), which may also be accompanied by localized involvement of an associated extralymphatic organ or site (IIIE), by involvement of the spleen (IIIS), or by involvement of both (IIIE + S). Stage III disease may be subdivided by anatomic distribution of abdominal involvement or by extent of splenic involvement. Stage III(1) indicates involvement that is limited to the upper abdomen above the renal vein. Stage III(2) indicates involvement of pelvic and/or para-aortic nodes. Five or more visible splenic nodules on a cut section constitutes extensive splenic involvement. Zero to four nodules is classified as minimal splenic disease. (from PDQ) [from
NCI]