Korean J Pediatr.  2010 Feb;53(2):253-257. 10.3345/kjp.2010.53.2.253.

A case of atypical hemolytic uremic syndrome as an early manifestation of acute lymphoblastic leukemia

Affiliations
  • 1Department of Pediatrics, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Gwangju, Korea. hoonkook@chonnam.ac.kr
  • 2Department of Laboratory Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Gwangju, Korea.

Abstract

Hemolytic uremic syndrome (HUS) is the most common cause of acute renal failure in children younger than 4 years and is characterized by microangiopathic hemolytic anemia, acute renal failure, and thrombocytopenia. HUS associated with diarrheal prodrome is usually caused by Shiga toxin-producing Escherichia coli O157:H7 or by Shigella dysenteriae, which generally has a better outcome. However, atypical cases show a tendency to relapse with a poorer prognosis. HUS has been reported to be associated with acute lymphoblastic leukemia (ALL) in children. The characteristics and the mechanisms underlying this condition are largely unknown. In this study, we describe the case of an 11-year-old boy in whom the diagnosis of ALL was preceded by the diagnosis of atypical HUS. Thus, patients with atypical HUS should be diagnosed for the possibility of developing ALL.

Keyword

Hemolytic uremic syndrome; Acute lymphoblastic leukemia; Acute renal failure

MeSH Terms

Acute Kidney Injury
Anemia, Hemolytic
Child
Hemolytic-Uremic Syndrome
Humans
Precursor Cell Lymphoblastic Leukemia-Lymphoma
Prognosis
Recurrence
Shiga-Toxigenic Escherichia coli
Shigella dysenteriae
Thrombocytopenia
Hemolytic-Uremic Syndrome
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