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PEDIATRICS Vol. 111 No. 5 May 2003, pp. e636-e640

ELECTRONIC ARTICLE

Hemophagocytic Lymphohistiocytosis Masquerading as Child Abuse: Presentation of Three Cases and Review of Central Nervous System Findings in Hemophagocytic Lymphohistiocytosis

Laura Rooms, MD*, Nancy Fitzgerald, MD{ddagger} and Kenneth L. McClain, MD, PhD*

Baylor College of Medicine, Department of Pediatrics
* Texas Children’s Cancer Center and Hematology Service
{ddagger} Edward B. Singleton Diagnostic Imaging Department, Houston, Texas

--> Hemophagocytic lymphohistiocytosis (HLH) is a rare disease resulting from abnormal proliferation of histiocytes in tissues and organs. Although the disease generally presents with systemic symptoms such as pancytopenia, coagulopathy, and organomegaly, HLH may also present with central nervous system (CNS) manifestations. CNS events can range from irritability to encephalopathy and coma. Retinal and intracranial hemorrhages are among the neuropathologic findings in these children. Patients who present with CNS findings may have symptoms that mimic those of inflicted injury. These children are at risk, therefore, for misdiagnosis as victims of child abuse. Such an error causes not only unnecessary additional trauma to the family but also, more important, a delay in initiating effective therapy. We present 3 cases of children with HLH who initially came to medical attention with neurologic findings, all suspected to be victims of child abuse. Subsequent laboratory evaluations, however, were consistent with the diagnosis of HLH. No additional evidence of child abuse was obtained, and the charges eventually were dropped. Two of the 3 children died from their disease shortly after presentation; the third is surviving with no evidence of HLH several months after allogeneic bone marrow transplantation. Although the diagnosis of child abuse certainly is all too common, clinicians need to be diligent and informed to avoid assigning this label erroneously. Several laboratory findings of HLH may alert physicians to the possibility of this diagnosis. The timely diagnosis of and institution of therapy for HLH may reduce ultimate morbidity and mortality.

Key Words: child abuse • hemophagocytic lymphohistiocytosis

Abbreviations: HLH, hemophagocytic lymphohistiocytosis • CNS, central nervous system • ED, emergency department • PT, prothrombin time • PTT, partial thromboplastin time • CT, computed tomography

Received for publication Aug 19, 2002; Accepted Dec 23, 2002.




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