Nonsyndromic Juvenile Myelomonocytic Leukemia With PTPN11 Mutation in a 9-Year-old Girl.

Autor: Sarper N; Department of Pediatrics, Division of Hematology †Department of Pathology, Kocaeli University, Kocaeli, Turkey., Gelen SA, Zengin E, Demirsoy U, Erçin C
Jazyk: angličtina
Zdroj: Journal of pediatric hematology/oncology [J Pediatr Hematol Oncol] 2015 Aug; Vol. 37 (6), pp. 486-7.
DOI: 10.1097/MPH.0000000000000363
Abstrakt: A 9.5-year-old girl with malaise, fever, massive hepatosplenomegaly, anemia, leukocytosis (37.9 × 10(9)/L), monocytosis (1.48 × 10(9)/L), and thrombocytopenia is presented. Hemoglobin F was increased (18%). Bone marrow erythroid/myeloid ratio was 40/1 with 7% myeloblast and 5% monocyte suggesting erythroleukemia or juvenile myelomonocytic leukemia (JMML). The patient had a fulminant course with respiratory compromise and died in 2 weeks before heterozygous somatic mutation in the PTPN11 gene was shown. JMML must be considered also in the patients older than 6 years. A cytopenic phase may precede JMML. Leucocytosis may be transient and there may be predominance of erythroid precursors in the bone marrow.
Databáze: MEDLINE