Transillumination
Normal Values
Normal findings depend on the area being evaluated, and the normal tissue of that region.
What do Abnormal Results Mean?
Areas filled with abnormal air or fluid will light up when they should not. For example, in a darkened room, the head of a newborn with possible hydrocephalus will light up when this procedure is done.
When done on the breast: - Internal areas will be dark to black if there is a lesion and bleeding has occurred (because blood does not transilluminate).
- Benign tumors tend to appear red.
- Malignant tumors are brown to black.
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