[Pathology of the neutrophil motility in childhood (author's transl)].

Polymorphonuclear motility has been recently recognised as a major step of host defense mechanisms, and its' impairment associated with recurrent infections. The deficiency could be essential or secondary to systemic illnesses, etc. The aim of this paper is to review briefly the different kinds of motility: chemotaxis, random and chemoquinesis, its' physiology and current laboratory techniques of evaluation. Finally, clinical findings and most relevant syndromes in clinical pediatrics are reviewed in the context of author's experience.