Hematology
Clinical discussions on blood disorders, coagulation, transfusion medicine, and hematologic malignancies.
Recent Discussions
Can aplastic anemia present with multiple infiltrative bone lesions, such as in the spine and pelvis?
There are several studies showing diffuse hypointense pictures with an infiltrative-like pattern on MRI in aplastic anemia and MDS. Some aplastic anemia and refractory cytopenia of childhood show patchy pattern of hematopoiesis with some regions having increased fat fraction and some remnants of hem...
Do you continue daratumumab beyond 24 months in first line treatment of amyloidosis?
This is an important and common clinical question, and one for which prospective data are currently limited. For background, the ANDROMEDA clinical trial (Kastritis et al., PMID 34192431) demonstrated that the addition of daratumumab to cyclophosphamide, bortezomib, and dexamethasone (CyBorD) signif...
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 ...
Would you consider using transdermal estrogen in a patient with “high risk” APLS patient on warfarin?
Given her clinical diagnosis of high-risk APS, I would first trial nonhormonal therapies or progesterone-only therapies for management of her post-menopausal symptoms. Current ACR guidance recommends against hormone replacement therapy in patients with APS on anticoagulation (Sammaritano et al., PMI...
Would you use routine PET scans after two cycles of R-CHOP to guide first-line treatment de-escalation in low-risk (aaIPI = 0) DLBCL patients?
This phase III trial suggests that in very low-risk limited-stage DLBCL (aaIPI = 0), patients who achieve a negative PET after two cycles of R-CHOP can safely receive only four total cycles instead of six, with similar 3-year PFS (92% vs 89%) and less toxicity. However, the results apply to a highly...
How do you approach relapsed idiopathic HLH?
If the patient was previously in remission after etoposide and steroids, they may well respond to etoposide and steroids again. I strongly consider hematopoietic stem cell transplant in anyone who relapses after an episode of HLH, since it is usually a harbinger of recurrent and potentially life-thr...
Do you initiate anticoagulation prophylaxis for pediatric patients with vascular compression secondary to solid tumor/lymphoma?
It is an interesting question, but lacks critical details. Of course, most cancers are prothrombotic, and anticoagulation can have risks: Is it arterial or venous compression? Complete obstruction? Acute or chronic? Collaterals? Is it compromising an organ? Is thrombus seen, or is there blood flow?...
Prior to gender affirming surgery, do you hold estrogen (or convert to transdermal) to minimize postoperative VTE risk?
I'd divide this into 2 sub-questions: what to do in a patient who has a history of thrombosis, and what to do in a patient without a history of thrombosis. In a patient with prior thrombosis, I would generally have them on indefinite anticoagulation alongside ongoing estrogen use. We know that trans...
How would you approach anticoagulation for a patient with acute bilateral pulmonary emboli related to malignancy, but with a concomitant cavitary lung mass experiencing episodic, small-volume hemoptysis?
This is an interesting question to which we need to apply the art of medicine, weighing the risks and benefits of treatment. The major fatal events in this exact scenario are: Recurrent PE from undertreatment. Sudden massive hemoptysis after aggressive anticoagulation. The physician's management s...
How do you decide between anticoagulation and observation for an incidentally detected subsegmental pulmonary embolism in elderly patients with a history of gastrointestinal bleeding?
We face this conundrum not infrequently because subsegmental emboli are subject to high inter-reader variability, and the accuracy of the finding in isolation is suspect (Batayneh et al., Blood 2023). I once mentioned this to a radiologist who reads CTAs and was told, tactfully, that I was full of i...