Stage I: Involvement of single lymph node/extra lymphatic site

Stage II: Involvement of 2 or more lymph node regions or an extra-lymphatic site & lymph node region on the same side of diaphragm.

Stage III: Involvement of lymph node region on both the sides or without extra-lymphatic involvement/involvement of spleen or both.

Stage IV: Diffuse involvement of one or more extra-lymphatic tissues e.g. liver or bone marrow.

References: Textbook of Pathology, Harsh Mohan

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Dr. Mehnaz Memon🖊