title: Severe neutrophilia in an infant with persistent pulmonary hypertension of the newborn.
abstract: We report the case of a term male infant with severe persistent pulmonary hypertension of the newborn, who developed massive neutrophilia of unknown etiology. An extensive evaluation failed to disclose an obvious cause for his neutrophilia. A bone marrow aspirate was performed and was consistent with a leukemoid reaction. This paper reviews the neonatal leukemoid reaction and its significance.
authors.affiliation: Department of Pediatrics, Division of Neonatal-Perinatal Medicine, University of Michigan Health System, Ann Arbor, Michigan, USA.
authors.forename: Cyril
authors.initials: C
authors.lastname: Engmann
authors.forename: Steven M
authors.initials: SM
authors.lastname: Donn
mesh_terms: D006801:Humans; D007231:Infant, Newborn; D007955:Leukemoid Reaction / Q000209:etiology*; D007958:Leukocyte Count; D008297:Male; D009504:Neutrophils; D010547:Persistent Fetal Circulation Syndrome / Q000150:complications*