Hodgkin's Disease is classified into four stages based on the extent of the spread:
Stage I: Limited to one lymph node region or a single organ Stage II: Involves two or more lymph node regions on the same side of the diaphragm Stage III: Affects lymph node regions on both sides of the diaphragm Stage IV: Spread beyond the lymphatic system to other organs such as the liver, bone marrow, or lungs