This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Medicine
A patient with Hodgkin&;s lymphoma is having a single cervical lymphnode. Biopsy showed lymphocyte: predominant variant Which of the following is the treatment of eboke - 
Select and explain. 
A. Chemotherapy with Radiotherapy, B. Chemotherapy only, C. Radiotherapy only, D. No treatment needed
C: Radiotherapy only
Answer: C: Radiotherapy only 
Explanation: Historically ,radiotherapy to lymph nodes is used to treat localised stage 1A(involvement of a single lymph node region) or stage 2 A(involvement of two or more lymph node regions) effectively , with no adverse prognostic features . Reference :Davidson &;s principles & practice of medicine 22nd edition pg no1043