30 year old male.

Almost 4 years prior to admission, he was diagnosed with a malignant brain tumor. It was removed surgically and he received chemotherapy.

After about three years, the tumor recurred. He was treated with radiation, and chemotherapy was resumed. During a clinic visit he was found to have a fever of 101°F, WBC of 1.0 x 109/L, and ANC (absolute neutrophil count) of 0 (zero).

He was admitted to the hospital and started on IV antobiotics and daily G-CSF injections. This CBC is from the sixth day of growth factor therapy.

CBC & Diff