i have been having tests done to determine the origin of my thrombocytosis.  my bone marrow biopsy shows increased megakaryocytes, increased WBCs, decreased RBCs, mildly decreased iron, no scarring.  any ideas?  my doctor said could be myeloproliferative or secondary.  negative JAK 2, another myeloproliferative test neg, elevated LDH, normal sed rate

Summarized question: What could cause thrombocytosis?