RT Book, Section A1 Yeung, Sai-Ching Jim A1 Manzullo, Ellen F. A1 Chaftari, Patrick A2 Kantarjian, Hagop M. A2 Wolff, Robert A. A2 Rieber, Alyssa G. SR Print(0) ID 1190839903 T1 Oncologic Emergencies T2 The MD Anderson Manual of Medical Oncology, 4e YR 2022 FD 2022 PB McGraw Hill Education PP New York, NY SN 9781260467642 LK accessmedicine.mhmedical.com/content.aspx?aid=1190839903 RD 2024/04/16 AB KEY CONCEPTSOncologic emergencies can result from either the cancer or its treatment. This chapter discusses some selected emergencies.Nervous system emergencies include spinal cord compression, increased intracranial pressure, leptomeningeal disease, seizures, and altered mental status.Superior vena cava (SVC) syndrome, hyperviscosity syndrome, hyperleukocytosis, venous thromboembolism, hemorrhage, and disseminated intravascular coagulopathy are the vascular and hematologic emergencies discussed.Urologic emergencies such as hemorrhagic cystitis and obstructive uropathy are discussed.Pulmonary problems such as airway obstruction, massive hemoptysis, toxic lung injuries, pneumonitis, and pulmonary fibrosis can be caused by cancer or cancer treatments.Several classic metabolic oncologic emergencies include syndrome of inappropriate antidiuretic hormone secretion, tumor lysis syndrome, and hypercalcemia of malignancy.Gastrointestinal bleeding in patients with cancer and typhlitis in patients with neutropenic fever are potentially serious complications.Immune checkpoint inhibitors may cause immune-related adverse effects (irAEs) in practically any organ system. Urgent skin irAEs include grade 3 and 4 inflammatory dermatitis or rash, bullous dermatosis, drug reaction with eosinophilia and systemic symptoms, and Stevens-Johnson syndrome or toxic epidermal necrolysis. Gastrointestinal irAEs are common. The main pulmonary irAE is pneumonitis. Endocrine irAEs affect the thyroid, adrenal, and pituitary glands as well as the pancreatic islets (type 1 diabetes), which may be associated with acute diabetic ketoacidosis. Myocarditis is rare but may be life threatening. Pneumonitis may be associated with poor overall survival.