Although investigators knew before 1980 that retroviruses could cause various forms of leukemia, lymphoma, and solid tumors in animals, not until then was the first human oncogenic retrovirus, human T-cell leukemia/lymphoma virus-I (HTLV-I), isolated .
Virginia Rhodes, MD
An oncologic emergency may be defined as any acute potentially morbid or life-threatening event
directly or indirectly related to a patient's tumor or its treatment. The differential diagnosis for a
patient with cancer who presents with acute conditions includes medical emergencies not related to
the patient's diagnosis of cancer.