[Acute respiratory failure associated with G-CSF-induced leukocyte recovery in three patients with preceding infection].

Acute respiratory failure (ARF) occurred at the time of leukocyte recovery promoted by granulocyte colony-stimulating factor (G-CSF) in three patients with the preceding infection (S. aureus pneumonia, varicella zoster, and P. aeruginosa bacteremia, respectively) which had developed during leukopenia after cancer chemotherapy. G-CSF was used for 4 to 6 days, and the leukocyte counts at onset of ARF were 19,300/microliter, 11,300/microliter, and 4,100/microliter, respectively. All of the three patients received high-dose methylprednisolone and the artificial respiration was used in two. Consequently two patients responded well and survived, but one died of respiratory failure 2 weeks after occurrence of ARF. Autopsy of the dead case revealed mild interstitial pneumonia in the both lungs together with bacterial pneumonia in the right lobe. These cases indicate that G-CSF-induced leukocyte recovery can cause severe ARF in patients with precending infection. Therefore, G-CSF should be administered very carefully to granulocytopenic patients with infection.