My mom, 81, was diagnosed with stage 3 poorly differentiated squamous cells. now is told she instead has stage 2 lymphoma. which one is accurate?

Lymphoma: Stage II ymphoma same side of diaphragm or in a nearby organ IIE. Stage III is in nodes on both sides of the diaphragm or into an area or organ next to the lymph nodes is noted with an E ,IIIE, or into the spleen IIIS or both III SE. Stage IV is in an organ not right next to a lymph node and bulky disease has an X qualifier. Good luck to your Mom and God bless.