<prompt> Myd88 L265p mutation is seen in:Multiple myelomaWaldenstroms macroglobulinemiaALLChronic myeloid leukemia  <response>: B i.e. Waldenstroms macroglobulinemiaRef: Robbins 9th edition, page 538Explanation:Waldenstrom MacroglobulinemiaIndolent neoplasm.Also known as lymphoplasmacytic lymphoma.Involves bone marrow 100, liver, spleen, lymph nodes 15 - 20.Rare sites of involvement lung and testis PGIMER exam options.IgM secretion.MYD88 mutation - virtually in all cases.Associated with cold agglutinin AIHA and Hyperviscosity syndrome in 15. 