The dramatic improvement made in recent years in the treatment of child hood malignancies has been in large part the result of advances in the field of pharmacology. Chemotherapy is the major therapeutic modality used to treat childhood cancer. Rational administration of antineoplastic chemo therapy to the child with cancer requires the pediatric oncologist to have a thorough understanding of the fundamental principles of clinical pharmaco logy, an intimate knowledge of the specific agents being used, and an aware ness of the unique biologic and physiologic features of children. In mid 1985,...