<prompt> Triad of leukoerythroblastosis, tear drop erythrocytes and large platelets is seen inEssential thrombocytosisPrimary myelofibrosisMyelodysplastic syndromeLangerhan cell histiocytosis  <response>: Ans. b Primary myelofibrosisRef: Robbins 9thpg 620630The most characteristic peripheral blood finding in PMF is myelophthisis, defined by the presence of leukoerythro- blastosis presence of nucleated red blood cells, metamyelocytes, myelocytes, myeloblasts, and megakaryocytes and dacryocytosis Tear drop RBCs 