<prompt> 1958. Most malignant form of NHL is -Diffuse large cellSmall cell lymphocytic lymphomaFollicular predominantly small cleaved cellLarge cell follicular  <response>: 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.Reference :Harsh mohan textbook of pathology sixth edition pg no 377 