MTP 045Clinical Challenges in Hematology: Too Many Cells---Polycythemia, Thrombocythemia, and LeukocytosisClinical questions to be addressed:When should we suspect and how do we diagnosis polycythemia?How do we distinguish secondary from primary thrombocytosis, and should we worry about thrombosis?What is the differential diagnosis of leukocytosis, and what should our evaluation entail?When should patients who are suspected of having "too many cells" be referred to a hematologist?