Wikipedia There is more information available on this subject at Cancer on the English Wikipedia.

Cancer, known scientifically as a Malignant neoplasm, is a disease in which affected cells can display three of the following properties:

  • Uncontrollable cellular reproduction above normal rates (this forms a Malignant tumor);
  • Invasion and destruction of neighboring tissue; and sometimes
  • Metastasis, a state in which affected cells spread throughout the body through the blood.

Halo UniverseEdit

Cancer ceased to be commonplace in the Human genome by the 22nd century, though cases appeared from time to time as far as the 26th century. However, these could be treated easily by this time.[1]

At some time during the Human-Covenant war, Michael Baird was diagnosed with this disease on board the UNSC The Heart of Midlothian.[1]



  1. 1.0 1.1 Halo: Evolutions - Essential Tales of the Halo Universe, Midnight in the Heart of Midlothian, page 81