<prompt> Which of the following statement on lymphoma is not true?A single classification system of Hodgkins disease is almost universally acceptedHodgkins lymphoma tends to remain localized to a single group of lymph nodes and spreads by contiguitySeveral types of Non-Hodgkins lymphoma may have aleukemic phaseIn general follicular NHL has worse prognosis compared to diffuse NHL  <response>: Classification system of Hodgkins disease is ANN ARBOR staging system The prognosis of Non-Hodgkins lymphoma varies markedly with various histological types of Non Hodgkins lymphoma. In general lymphomas with a follicular histological pattern are of lower grade longer survival than those of diffuse pattern. Clinical difference between Hodgkins and Non Hodgkins lymphoma: Hodgkins lymphoma Non Hodgkins lymphoma More often localized to a single axial group of cervical, mediastinal, para-aoic nodes More frequent involvement of multiple peripheral nodes Orderly spread by contiguity Non contiguous spread Mesenteric nodes and Waldeyer ring rarely involved Waldeyer ring and mesenteric nodes commonly involved Extra-nodal involvement uncommon Extra-nodal involvement 