What Is Your Guess? Which Count Is Correct?

A 77-year-old woman with Burkitt leukemia and lymphomatous meningitis was started on the PETHEMA (Programa para el Estudio de la Terapeutica en Hemopatia Maligna) protocol of chemotherapy. After the first chemotherapy cycle, the patient's leukocyte count in the cerebrospinal fluid (CSF) was 0. On cycle 2, the patient received intrathecal liposomal cytarabine (Depocyte®). Two weeks later, there was …