Surgery Stage III lymphoma in Ann Arbour classification of lymphoma is: A Involvement of lymph node regions or lymphoid structures on both sides of the diaphragm B Involvement of two or more lymph node regions on the same side of the diaphragm C Diffuse involvement of extralymphatic lymph nodes D Involvement of one lymph node or a single region 💡 Explanation Stage III lymphoma in Ann Arbour classification of lymphoma is: ✓ Correct Answer: A. Involvement of lymph node regions or lymphoid structures on both sides of the diaphragm