ASH Clinical News December 2016 | Page 84

You Make the Call Each month in “You Make the Call,” we’ll pick a challenging clinical question submitted through the Consult-a-Colleague program and post the expert’s response. But, what would YOU do? We’ll also pose a submitted question and ask you to send your responses. See how your answer matches up to the experts in the next print issue. This month, Arnold S. Freedman, MD, answers a question about restarting rituximab as part of a new chemotherapy regimen for a patient with diffuse large B-cell lymphoma. Clinical Dilemma: In 2012, I treated a young man with follicular lymphoma with four cycles of bendamustine/rituximab. He developed prolonged neutropenia (presumed rituximab associated) that lasted eight months. He now has diffuse large B-cell lymphoma (DLBCL). Would you restart rituximab as part of a new chemotherapy regimen? Is he at higher risk for recurrence of rituximab-associated neutropenia? Consult a Colleague Through ASH Consult a Colleague is a service for ASH members that helps facilitate the exchange of information between hematologists and their peers. ASH members can seek consultation on clinical cases from qualified experts in 11 categories: • Anemias • Hematopoietic cell transplantation • Hemoglobinopathies • Hemostasis/thrombosis Experts Make the Call • Lymphomas • Lymphoproliferative disorders Arnold S. Freedman, MD Professor of Medicine Harvard Medical School; Department of Medical Oncology Dana-Farber Cancer Institute Boston, MA • Leukemias • Multiple myeloma & Waldenström macroglobulinemia • Myeloproliferative disorders • Myelodysplastic syndromes • Thrombocytopenias I would suspect that bendamustine is more likely the cause of the neutropenia. I would perform a bone marrow biopsy and send for cytogenetics. I think you have to use R-CHOP at this time for the DLBCL. IV IgG anecdotally helps reverse the neutropenia of rituximab. Assigned volunteers (“colleagues”) will respond to inquiries within two business days (either by email or phone). Saikia TK, Menon H, Advani SH. Prolonged neutropenia following anti CD20 therapy in a patient with relapsed follicular non-Hodgkin’s lymphoma and corrected with IVIG. Ann Oncol. 2001 Oct;12:1493-4. Have a puzzling clinical dilemma? Submit a question, and read more about Consult-a-Colleague volunteers at hematology.org/Clinicians/Consult.aspx or scan the QR code. DISCLAIMER: ASH does not recommend or endorse any specific tests, physicians, products, procedures, or opinions, and disclaims any representation, warranty, or guaranty as to the same. Reliance on any information provided in this article is solely at your own risk. *If you have a request related to a hematologic disorder not listed here, please email your recommendation to ashconsult@ hematology.org so it can be considered for addition in the future. Next Month’s Clinical Dilemma: recommendations regarding pregnancy? ADDITIONAL RESOURCE A 31-year-old female, who had a recent miscarriage at six weeks of pregnancy, was participating in boot camp. She developed sudden onset left arm pain and numbness and was found to have 82 ASH Clinical News brachial and axillary artery thromboses. She underwent an emergent thrombectomy. She was noted to have a dual brachial system, and a subacute thrombus was removed. An ECHO was negative for cardiac thrombus or defect. Her angiogram was negative for stenosis or dissection. A hypercoaguable workup was negative. The patient was placed on rivaroxaban; she wants to conceive again as soon as she can. How long should she continue anticoagulation, and any How would you respond? Email us at [email protected]. December 2016