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
[{'content': '1958. Most malignant form of NHL is - \nSelect and explain. \nA. Diffuse large cell, B. Small cell lymphocytic lymphoma, C. Follicular predominantly small cleaved cell, D. Large cell follicular', 'role': 'user'}, {'content': 'Answer: A \nExplanation: <p>Diffuse large B cell lymphoma comprises 31% of NHL.About half the cases have extranodal involvement at the time of presentation,paicularly in the bone marrow & alimentary tract.It is a high grade NHL & is very aggressive & disseminate widely.It has rapid proliferation rates,rapidly produces symptoms & is fatal if untreated.</p><p>Reference :Harsh mohan textbook of pathology sixth edition pg no 377</p>', 'role': 'assistant'}]