Author: Si, Stephanie J.; Tasian, Sarah K.; Bassiri, Hamid; Fisher, Brian T.; Atalla, Jasmyn; Patel, Reema; Romberg, Neil; Lambert, Michele P.; Paessler, Michele; Behrens, Edward J.; Teachey, David T.; Sullivan, Kathleen E.
Title: Diagnostic Challenges in Pediatric Hemophagocytic Lymphohistiocytosis Cord-id: 0cakuwrr Document date: 2021_3_24
ID: 0cakuwrr
Snippet: Hemophagocytic lymphohistiocytosis (HLH) is a syndrome of severe immune dysregulation that encompasses a broad range of underlying genetic diseases and infectious triggers. Monogenic conditions, autoimmune diseases, and infections can all drive the phenotype of HLH and associated immune hyperactivation with hypercytokinemia. A diagnosis of HLH usually requires a combination of clinical and laboratory findings; there is no single sensitive and specific diagnostic test, which often leads to “dia
Document: Hemophagocytic lymphohistiocytosis (HLH) is a syndrome of severe immune dysregulation that encompasses a broad range of underlying genetic diseases and infectious triggers. Monogenic conditions, autoimmune diseases, and infections can all drive the phenotype of HLH and associated immune hyperactivation with hypercytokinemia. A diagnosis of HLH usually requires a combination of clinical and laboratory findings; there is no single sensitive and specific diagnostic test, which often leads to “diagnostic dilemmas†and delays in treatment initiation. Ferritin levels, one of the most commonly used screening tests, were collected across a large tertiary care pediatric hospital to identify the positive predictive value for HLH. Herein, we present several cases that illustrate the clinical challenges of confirming an HLH diagnosis. Additionally, we report on the utility of establishing a formal multi-disciplinary group to aid the prompt diagnosis and treatment of patients presenting with HLH-like pathophysiologies.
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