Sangeeta SN Senguptaalmost 7 years ago

A 75 yr old male presented in opd with a swelling in dorsum of Lt. Hand. During drainage, hematoma were evacuated. Patients Hb came to be 4.9. blood transfusion done. After second transfusion (prbc) he developed leucocytosis tlc 53300. Platelet count normal rest of the investigations normal . What may be the cause of sudden rise in tlc