Fibroid: Benign tumors of the uterus that can occur in the lumen of the uterus or in the wall or project out on the surface.

Hormone: Chemical substance produced in an organ, which, carried to an associated organ by the blood stream, influences its functional activity.

PID: Inflammation or infection of the internal female genital organs.

Prostaglandins: A group of extremely active substances in the body that affect many organs. Certain prostaglandins have a role in stimulating the uterine contractions of labor and birth.

Intra uterine device: Contraceptive devices placed within the uterus, like copper T.