Results of a complete blood cell count revealed absolute leukocytosis
(67 500 cells/[micro]L; reference interval [mean [+ or -] SD], 22 600 [+ or -] 11 120 cells/[micro]L) characterized by marked heterophilia (39 825 cells/[micro]L; reference interval, 9892 [+ or -]4813 cells/[micro]L), and mild lymphocytosis (27 675 cells/[micro]L; reference interval, 9755 [+ or -] 8352 cells/[micro]L), which corresponded to the severe tissue inflammation of the right wing.
A widely accepted but underinvestigated dictum holds that the very young and the very old may have a clinically significant leftshifted diff without demonstrating absolute leukocytosis
.(7) Realizing that this observation deserved further study, but seemed to have merit, we decided to continue to do diffs ordered by physicians for all patients younger than 12 and those older than 65, regardless of the total white cell count.