oncological emergencies oncological emergencies oncological emergencies are a group of conditions that occur as a direct or indirect result of cancer or its treatment that are potentially life-threatening these include: hypercalcaemia neutropaenic sepsis tumour lysis syndrome leukostasis raised intracranial pressure spinal cord compression cauda equina syndrome superior vena cava obstruction syndrome of inappropriate antidiuretic hormone secretion (siadh) disseminated intravascular coagulation