An updated narrative review on the management of the most common oncological and hematological emergencies.

Oncological emergencies are defined as an acute life-threatening event in a patient with a tumor occurring as part of their complex treatment regimen or secondarily to their underlying malignancy. These events can occur at any time from the initial diagnosis of their cancer to end-stage disease. These oncological emergencies are broadly classified into four major categories; metabolic, structural, hematological and treatment-related causes; and can be encountered in any clinical setting, ranging from primary care physician and emergency department visits to a variety of subspecialty environments. This study aims to cover an in-depth review of the underlying pathogenesis, clinical presentation, and updated management protocol of most common emergencies belonging to the above-mentioned categories. An all-language literature search was conducted on 15th October 2021 and 10th March 2022, limited to 5 years on PubMed database using the following search strings: oncological emergencies, malignant spinal cord compression, febrile neutropenia, hyperviscosity syndrome, superior vena cava syndrome, immune related adverse events, tumor lysis syndrome, hypercalcemia of malignancy, corrected calcium, malignant pericardial effusion and chemotherapy extravasation.