Hematology
Clinical discussions on blood disorders, coagulation, transfusion medicine, and hematologic malignancies.
Recent Discussions
What is your approach to chronic non-immune mediated thrombocytopenia management in children?
There are whole textbook chapters on this topic, and we use a variant of this question to review the differential diagnosis of thrombocytopenia with our fellows as a didactic exercise. So I take from this question, which is an important one, what might be a framework to consider the differential dx ...
For transplant-ineligible aplastic anemia planned for immunosuppression, how do you approach duration and tapering of cyclosporine and eltrombopag?
One of the most common mistakes in the management of AA is premature tapering of cyclosporine or tacrolimus. If there is a complete remission, and by that I mean normalization of counts, not complete remission as defined in some papers (e.g., ANC 1000, Plts 100,000, Hb 10 as in de Latour et al., PMI...
What is the optimal timing for PET/CT to assess disease and treatment response with nivo + AVD?
The S1826 study did not require interim imaging. Despite this, I routinely order an imaging test prior to cycle 3, day 1 for patients on the N-AVD regimen. In most cases, I order PET/CT scans. I continue therapy in patients with a Deauville score of 4 or less (partial or complete response) rather th...
Do you favor 24 hour urinary metabolites over random urine collection when screening for MCAS?
In my practice, I currently use 24-hour urine metabolites. The 24-hour urine collection has been extensively validated and its use is supported by the literature (see review: Butterfield et al, PMID 35346887).That being said, a spot urine collection is now available and this is far more convenient f...
How would you work up a mildly neutropenic patient (ANC >800) with family history of neutropenia and personal history of occasional mouth sore?
The first question is whether to evaluate the neutropenia at all. With ANCs >800 and only occasional mouth sores, is a diagnosis necessary, and should the term “neutropenia” be used at all? If the family’s origin is in a part of the world where the Duffy null phenotype is common (e.g. Africa, parts ...
What are your top takeaways in Lymphoma from ASH 2025?
Fixed-duration versus continuous targeted treatment for previously untreated chronic lymphocytic leukemia: Results from the randomized CLL17 trial — This trial may change practice by using the combination of BTK-I and Ven without CD20 antibodies. This time-limited option led to MRD, and I would expe...
In what scenarios do you use a chromogenic factor X assay in adjusting INR goals for patients on warfarin?
I do not use this method. It has been suggested that such assays be used in patients with lupus-type inhibitors who have significantly prolonged prothrombin times at baseline. In this setting, if the INR is "therapeutic," one would confirm an adequate warfarin effect if the factor X activity was in ...
What is a reasonable hemoglobin goal for patients with chronic anemia presenting with acute MI?
The diversity of acute myocardial infarction (AMI) does not allow a monolithic answer to this question. The recent MINT study—an important contribution presented at AHA 2023 and published in NEJM—highlights this complexity. Although MINT, which randomized anemic patients with AMI to liberal versus r...
Would you continue or stop anticoagulation for a DVT/PE in a patient with active cancer who has completed 6 months of therapy?
This is an important question that we didn’t really have a clear answer for… until this year when an NEJM RCT was published! Mahé et al., PMID 40162636 In this RCT, patients with cancer-associated VTE who completed 6 months of full-dose apixaban were randomized to half-dose apixaban vs. full-dos...
Do you diagnose MCAS if a patient is concurrently on drugs known to cause non-specific mast cell degranulation?
Yes, MCAS may be diagnosed if a patient is on drugs known to cause non-specific mast cell activation.The reason for this answer requires a better understanding of MCAS criteria and etiology. In 2022, an expert consortium proposed revisions to the classification of mast cell activation disorders. (Va...