[Neutropenia in disorders of the neutrophil motility].

A 51-year-old patient exhibited severe neutropenia over a period of 12 months following lobectomy for carcinoma of the lung. Marrow neutrophil mass and marrow neutrophil production were measured quantitatively and were within normal limits. Mobilization into a skin window was absent. A defect in neutrophil motility could be demonstrated in vitro and was confirmed in vivo by poor neutrophil release from the marrow following injection of hydrocortisone; it thus represented a lazy leukocyte syndrome of the adult.