I
Idarubicin (i da rou bi sin)

A chemotherapy drug.

Ifosfamide (i foss fa mide)

A chemotherapy drug.

Immune system

Part of the body that fights infection. Includes the white blood cells and the lymphatic system.

Intensification

Later-stage treatment for leukaemia that uses drug therapy to kill off any remaining cancer cells.

Intracranial pressure
 Pressure inside the skull.
Intrathecal (in tra thee cal)

Into the fluid around the spinal cord, some chemotherapy drugs are given in this way. And pain killers can also be given in this way.

Intravenous

An injection into a vein.

Intravenous infusion (Drip)

Fluid running into a needle or central line that goes into the bloodstream.