An invasive disease is one that spreads to surrounding tissues. An invasive procedure is one in which the body is "invaded", or entered by a needle, tube, device, or scope.
Stedman's Online Medical Dictionary. Available at: www.stedmansonline.com/content.aspx?id=mlrI1400023901&termtype=t. Accessed April 21, 2015.
Update Date 4/11/2015
Updated by: Linda J. Vorvick, MD, Medical Director and Director of Didactic Curriculum, MEDEX Northwest Division of Physician Assistant Studies, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.