Febrile neutropenia,- Transfusion support -- Tumor lysis syndrome -- Cardiopulmonary emergencies -- Neurologic emergencies -- Hyperleukocytosis.-  The acute abdomen -- Thrombotic disorders -- Pain -- Emesis -- Oral mouth care and mucositis -- Nutrition -- Acute radiation side effects -- Prevention of infections -- Hematopoietic growth factors -- Immunization practice -- Central venous catheters -- Knowledge gaps and opportunities for research.