The Etiology and Prognosis of Delayed Postoperative Leukocytosis in Lung Transplant Recipients.

Delayed post-lung transplant leukocytosis is a poor prognostic sign, especially when attributed to acute graft rejection, infection, and multiple etiologies. In the absence of an identifiable etiology, it can be attributed to postoperative reactive stress, is not associated with increased mortality, and likely does not warrant further diagnostic investigation.