A 40-year-old man presents with 5 days of productive cough and fever. Pseudomonas aeruginosa is isolated from a pulmonary abscess. The CBC shows an acute effect characterized by marked leukocytosis (50,000 WBC/mL), and the differential count reveals numerous immature cells (band forms). Which of the following terms best describes these hematologic findings?
Leukemoid reaction Leukopenia Myeloid metaplasia Myeloproliferative disease