Marrow Assessment for Hemophagocytic Lymphohistiocytosis Demonstrates Poor Correlation With Disease Probability

American Journal of Clinical Pathology (Impact Factor: 2.51). 01/2014; 141(1):62-71. DOI: 10.1309/AJCPMD5TJEFOOVBW
Source: PubMed


To evaluate the amount of hemophagocytosis in 64 marrow core biopsy specimens and aspirates from 58 patients with clinical suspicion for secondary hemophagocytic lymphohistiocytosis (HLH) or reported findings of hemophagocytosis.

A review of medical records assigned patients to a low-risk (45 patients) or high-risk (13 patients) HLH group, and association with histologic findings was examined using the Fisher exact test.

The amount of hemophagocytosis in aspirate or the core biopsy specimen did not correlate with disease probability (P = .17 and P = .63, respectively). Of the clinical/laboratory criteria assessed, the most significant correlations with HLH were highly elevated ferritin (P = .01), cytopenias (P = .02), and fever (P = .009).

Our findings indicated that marrow histologic findings alone do not reliably predict the probability of HLH, and an isolated finding of hemophagocytosis, even when present in a high amount, lacks specificity for HLH.

23 Reads
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Results The study sample included 362 patients with systemic JIA and MAS, 404 patients with active systemic JIA without MAS, and 345 patients with systemic infection. The best capacity to differentiate MAS from systemic JIA without MAS was found when the preliminary MAS guidelines were applied. The 3/5-adapted HLH-2004 guidelines performed better than the 4/5-adapted guidelines in distinguishing MAS from active systemic JIA without MAS. The 3/5-adapted HLH-2004 guidelines and the preliminary MAS guidelines with the addition of ferritin levels ≥500 ng/ml discriminated best between MAS and systemic infections.
    07/2014; 66(10). DOI:10.1002/art.38769
  • [Show abstract] [Hide abstract]
    ABSTRACT: Purpose of review: Macrophage activation syndrome is the rheumatic disease-associated member of a group of hyperinflammatory syndromes characterized by uncontrolled cytokine storm. In this review, we highlight recent publications related to the pathoetiology of hyperinflammatory syndromes with an emphasis on how this new knowledge will guide our diagnosis, treatment, and future research efforts to better understand these deadly conditions. Recent findings: The heterogeneity of clinical manifestations seen in patients with hyperinflammatory syndromes continues to grow as novel genetic and immunotherapeutic triggers of cytokine storm have been identified. Recent studies characterize unique cytokine and gene expression profiles from patients with different hyperinflammatory syndromes, whereas novel murine models begin to define networks of immune dysregulation thought to drive excessive inflammation in cytokine storm. Summary: Emerging evidence suggests hypercytokinemia is the driving cause of immunopathology and morbidity/mortality in hyperinflammatory syndromes. Therefore, approaches to block cytokine function may be fruitful in treating hyperinflammatory syndromes with less toxicity than current therapies. However, not all hyperinflammatory syndromes result in the same pathogenic cytokine profile, implying that a personalized approach will be required for effective use of anticytokine therapies in the treatment of hyperinflammatory syndromes.
    Current Opinion in Rheumatology 07/2014; 26(5). DOI:10.1097/BOR.0000000000000093 · 4.89 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Objectives: Bone marrow (BM) aspiration and trephine biopsy is one of the most valuable procedures in the evaluation of hematological disorders. There is a shortage of published literature regarding the indications, procedure, and outcome of bone marrow examination (BME) in neonates and infants. The aim of the present study is to analyze the common indications of performing BME and to assess the spectrum of disorders diagnosed from BM of neonates and infants. Methods: A retrospective analysis of BMEs performed in infants over a period of 5 years, between 2009 and 2013 was done. Results and discussion: A total of 297 BME were performed on 285 infants, which constitutes 10.3% of pediatric BME procedures during the same period. In our institute, BME is routinely performed by trained pathologists from posterior superior iliac spine in children including infants and neonates with an overall sample adequacy of 97%. Evaluation of cytopenias and suspicion of storage disorder were the most common indications for BME procedure, while acute leukemias and storage disorders were the most common diagnoses offered in infant BM. Conclusions: Posterior superior iliac spine is a good site of BME in neonates and infants. BM trephine biopsy is a difficult procedure in this age group, however remains indispensable in situations where an infiltrative pathology is suspected. BME not only helps to make specific diagnoses but should also be used as an extremely valuable, quick, and economically viable procedure to exclude major hematological disorders including certain forms of storage disorder and hematological malignancy in this age group.
    Hematology (Amsterdam, Netherlands) 08/2014; 20(3). DOI:10.1179/1607845414Y.0000000184 · 1.25 Impact Factor
Show more


23 Reads