The passage of light through body tissues for the purpose of examination.
Visual inspection of a body structure or organ by passing a light through its walls.
A method of detecting breast cancer in which light is passed through breast tissues to detect and differentiate between cysts and malignant tumors.
An examination of an organ by shining a bright light through it.
The technique of shining a bright light through part of the body to examine its structure. Transillumination of the sinuses of the skull is a means of detecting abnormalities.
Inspection of a cavity or organ by passing a light through its walls. When pus or a lesion is present, the transmission of light is diminished or absent.
A method in which a powerful beam of light is directed through bodily tissues to investigate the structure or organ being examined.
An occasional procedure performed during the physical examination of a bump or swelling involves shining light from a small flashlight onto one side of the bump. If the light is visible on the opposite side, it indicates the presence of transparent fluid within the lump.
Lighting up an object by passing light through it; the lighting of the inner walls of a hollow space with light that shines through them; the shining of intense light through the tissue of a hollow organ. This technique is occasionally employed to detect fluid in a nasal sinus or to light up a hydrocele. In the case of a hydrocele, if the light passes through, the swelling is filled with clear fluid; if it does not, the swelling is likely due to a tumor or blood.