Intracranial pressure, harmful when increased.

IGF-1 or IGF-I

Insulin-like growth factor-1.


Insulin-like growth factor binding protein-3.


Increased intracranial pressure.




Use of the body's immune system to fight tumors. See biological response modifier.

Implanted Port

A catheter connected to a quarter-sized disk that is surgically placed just below the skin in the chest or abdomen.


Refers to tumors that cannot be approached by surgical procedure.


Scientific/medical reason for performing a certain procedure.


Refers to a tumor that penetrates the normal, surrounding tissue.

Informed Consent

The right to have information explained to you so that you fully understand and agree to the nature of the proposed treatment.

Interstitial Radiation Therapy

The implantation of radioactive seeds directly into a tumor.

Interventional Radiology

The clinical subspecialty that uses fluoroscopy, CT, and ultrasound to guide percutaneous (through the skin) procedures such as performing biopsies, draining fluids, inserting catheters, or dilating or stenting narrowed ducts or vessels.

Intestinal Polyps

Small growths in the bowel with the potential for further growth.


Within the skull.

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