OverviewTransillumination is the shining of a bright light through a body cavity or organ for diagnostic purposes. Transilllumination can be used on the head, scrotum, or chest in the premature or newborn infant, or the breast in an adult female.
Update Date 10/14/2013
Updated by: George F. Longstreth, MD, Department of Gastroenterology, Kaiser Permanente Medical Care Program, San Diego, California. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.