Approach Considerations

Treatments for primary polycythemia include the following:

Phlebotomy - The goal of phlebotomy is to maintain normal red cell mass and blood volume, with a target hematocrit level of 42-46% for men and 39-42% for women
Hydroxyurea - Hydroxyurea as a myelosuppressive agent is also widely used in high-risk patients with polycythemia vera (ie, >60 y, history of thrombosis) who require cytoreductive therapy, reducing the need for phlebotomy ^[2]
Interferon - Interferon-alpha is effective in eliminating JAK2^V617Fexpression and inducing hematologic remission
Tyrosine kinase inhibitors

Phlebotomy is used for symptomatic hyperviscosity in secondary polycythemia.

Primary polycythemia

The goals of therapy are to maximize survival while minimizing the complications of therapy as well as of the disease itself. For polycythemia vera, phlebotomy and myelosuppressive chemotherapy are the cornerstones of therapy. Based on clinical trials in adults, these approaches have produced a median survival time of 9-14 years after the beginning of treatment. Current recommendations for treatment of young patients primarily rely on phlebotomy because the thrombosis is far less likely to occur in children and the long-term risks of leukemia over a longer life span are increased.

Secondary polycythemia

Phlebotomy is used for symptomatic hyperviscosity. The goal is to treat the underlying cause of polycythemia.

Surgical Care

Surgery is not typically indicated. Occasionally, splenectomy is performed late in the course of the disease if massive splenomegaly causes adverse effects such as early satiety, anemia, or thrombocytopenia from sequestration. Please note that these patients have a high risk of complications during surgical procedures.

Diet

Diet is unrestricted.

Medication

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Media Gallery

Bone marrow film at 400X magnification demonstrating dominance of erythropoiesis. Courtesy of U. Woermann, MD, Division of Instructional Media, Institute for Medical Education, University of Bern, Switzerland.

of 1

Author

May C Chien, MD Clinical Assistant Professor, Department of Medicine, Division of Hematology, Clinical Assistant Professor, Department of Pediatrics, Division of Hematology and Oncology, Associate Director, Hematology Block, Science of Medicine Course, Stanford University School of Medicine

May C Chien, MD is a member of the following medical societies: American Academy of Pediatrics, American College of Physicians, American Society of Clinical Oncology, American Society of Hematology, American Society of Pediatric Hematology/Oncology, Children's Oncology Group, Sigma Xi, The Scientific Research Honor Society

Disclosure: Nothing to disclose.

Coauthor(s)

Kathleen M Sakamoto, MD, PhD Shelagh Galligan Professor, Division of Hematology/Oncology, Department of Pediatrics, Stanford University School of Medicine

Kathleen M Sakamoto, MD, PhD is a member of the following medical societies: American Association for Cancer Research, American Society of Hematology, American Society of Pediatric Hematology/Oncology, International Society for Experimental Hematology, Society for Pediatric Research, Western Society for Pediatric Research

Disclosure: Nothing to disclose.

Specialty Editor Board

Mary L Windle, PharmD Adjunct Associate Professor, University of Nebraska Medical Center College of Pharmacy; Editor-in-Chief, Medscape Drug Reference

Disclosure: Nothing to disclose.

James L Harper, MD Associate Professor, Department of Pediatrics, Division of Hematology/Oncology and Bone Marrow Transplantation, Associate Chairman for Education, Department of Pediatrics, University of Nebraska Medical Center; Associate Clinical Professor, Department of Pediatrics, Creighton University School of Medicine; Director, Continuing Medical Education, Children's Memorial Hospital; Pediatric Director, Nebraska Regional Hemophilia Treatment Center

James L Harper, MD is a member of the following medical societies: American Society of Pediatric Hematology/Oncology, American Federation for Clinical Research, Council on Medical Student Education in Pediatrics, Hemophilia and Thrombosis Research Society, American Academy of Pediatrics, American Association for Cancer Research, American Society of Hematology

Disclosure: Nothing to disclose.

Chief Editor

Lawrence C Wolfe, MD Associate Chief for Hematology and Safety, Division of Pediatric Hematology-Oncology, Cohen Children's Medical Center

Lawrence C Wolfe, MD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Pediatrics, American Association of Blood Banks, American Society of Hematology, Children's Oncology Group, Eastern Society for Pediatric Research

Disclosure: Nothing to disclose.

Additional Contributors

Scott S MacGilvray, MD Clinical Professor, Department of Pediatrics, Division of Neonatology, The Brody School of Medicine at East Carolina University

Scott S MacGilvray, MD is a member of the following medical societies: American Academy of Pediatrics

Disclosure: Nothing to disclose.

Joseph K Park, MD, PhD Paul and Yuanbi Ramsay Endowed Postdoctoral Fellow, Division of Hematology/Oncology, Lucile Packard Children's Hospital at Stanford

Disclosure: Nothing to disclose.

Krysta D Schlis, MD Clinical Assistant Professor of Pediatrics, Lucile Packard Children’s Hospital, Stanford University School of Medicine

Krysta D Schlis, MD is a member of the following medical societies: American Society of Hematology, American Society of Pediatric Hematology/Oncology

Disclosure: Nothing to disclose.

Acknowledgements

Kristin Baird, MD Staff Clinician, Pediatric Oncology Branch, National Cancer Institute, National Institutes of Health

Disclosure: Nothing to disclose.

Sun H Choo, MD Resident Physician, Department of Pediatrics, University of California, Los Angeles, David Geffen School of Medicine

Disclosure: Nothing to disclose.