Hemophagocytic Lymphohistiocytosis: an Under-recognized and Life-threatening Condition

  • Bishesh Sharma Poudyal Clinical hematology and Bone marrow transplant Unit, Civil Service Hospital, Kathmandu, Nepal
  • Bishal Poudel Clinical hematology and Bone marrow transplant Unit, Civil Service Hospital, Kathmandu, Nepal
  • Sampurna Tuladhar Department of Pathology, Civil Service Hospital, Kathmandu, Nepal
  • Swarup Sharma Rijal Department of Medicine, Tower Health –Reading Hospital, Wyomissing, PA, USA
  • Gentle Sunder Shrestha Department of Critical care, Tribhuvan University Teaching Hospital, Kathmandu, Nepal
  • Utsav Joshi Department of Internal Medicine, Rochester General Hospital, NY, USA https://orcid.org/0000-0002-8251-5846

Abstract

Diagnosis of hemophagocytic lymphohistiocytosis is a challenge in Nepal because of limited resources and the high prevalence of tropical febrile illness mimicking hemophagocytic lymphohistiocytosis. We retrospectively reviewed medical records of 21 patients who were diagnosed with hemophagocytic lymphohistiocytosis from 2010 to 2015 at a single center in Nepal. Two patients had a mutation in their perforin gene and underwent successful haploidentical stem cell transplantation. Marrow hemophagocytosis was found only in 57% of the patients. Five patients had hematological malignancy and were treated with disease-specific chemotherapy. Seven patients developed hemophagocytic lymphohistiocytosis secondary to an infection, including visceral leishmaniasis, scrub typhus, and Epstein Barr virus. EBV-associated hemophagocytic lymphohistiocytosis was refractory to hemophagocytic lymphohistiocytosis 94 protocol, including the addition of rituximab. Malignancy and infection-associated hemophagocytic lymphohistiocytosis was more common. The most common clinical presentations included fever, splenomegaly, hyponatremia, liver function derangement, hyperfibrinogenemia, hyperferritinemia, and cytopenia. With a mortality of 29% in our study cohort, hemophagocytic lymphohistiocytosis should be considered a lethal disease, and clinicians should maintain a high index of suspicion to diagnose this disease.
Keywords: Hemophagocytic lymphohistiocytosis; infection; malignancy.

Published
2023-03-10
How to Cite
Poudyal, B. S., Poudel, B., Tuladhar, S., Rijal, S. S., Shrestha, G. S., & Joshi, U. (2023). Hemophagocytic Lymphohistiocytosis: an Under-recognized and Life-threatening Condition . Journal of Nepal Health Research Council, 20(3), 794-796. https://doi.org/10.33314/jnhrc.v20i3.4315
Section
Short Communication