Malignant disease conditions 

Febrile neutropenia is a medical emergency characterized by fever occurring in the presence of neutropenia, most commonly following chemotherapy for malignancy or as a result of bone marrow failure syndromes. It is associated with a high risk of severe bacterial and fungal infections because of impaired host immunity.

Tumor lysis syndrome (TLS) is a life-threatening oncological emergency resulting from rapid destruction of malignant cells, leading to the release of intracellular potassium, phosphate, and nucleic acids into the circulation. The subsequent metabolic abnormalities include hyperuricaemia, hyperkalaemia, hyperphosphataemia, hypocalcaemia, and acute kidney injury.

High-grade gliomas (HGGs) are aggressive primary malignant brain tumors that include Anaplastic Astrocytoma (WHO Grade 3) and Glioblastoma Multiforme (GBM, WHO Grade 4). These tumors are characterized by rapid growth, diffuse infiltration of surrounding brain tissue, and poor prognosis despite multimodal treatment.

Low-grade gliomas (LGGs) are primary brain tumors arising from glial cells and are generally classified as World Health Organization (WHO) Grade 2 diffuse gliomas. They are slow-growing tumors that commonly affect young and middle-aged adults.

Pituitary tumors account for approximately 10% of all intracranial tumors. Most are benign pituitary adenomas that arise from the anterior pituitary gland. Clinical manifestations result from local mass effect on surrounding structures, particularly the optic chiasm, or from hypersecretion or hyposecretion of pituitary hormones.