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
Poor prognostic factors for Hodgkin&;s disease are all except - 
Select and explain. 
A. Younger age, B. Systemic manifestations, C. Lymphocyte depletion, D. stomach involvement
A: Younger age
Answer: A: Younger age 
Explanation: <p>According to the Hasenclever prognostic index for advanced Hodgkin lymphoma,risk factors are - age>45yrs,male gender,stage 4 disease(diffuse involvement of one or more extralymphatic tissues with/without constitutional symptoms ),lymphopenia etc. Lymphocyte depletion is having poor prognosis .</p><p>Reference :Davidson&;s principles & practice of medicine 22nd edition pg no1043. </p>