Diaphanography in the diagnosis of breast cancer.

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Abstract
In diaphanography, a light source is applied to the breast to visualize lesions through a television camera sensitive to infrared light. Diaphanography and mammography were performed in 1,476 patients in a screening population. Twenty-six cancers in 24 patients were confirmed by biopsy; detection rates were 96% for mammography, 58% for diaphanography, and 62% for physical examination. Mammography was significantly more sensitive than either diaphanography or physical examination (p < 0.005). Mammography detected 10 cancers that were missed at physical examination, whereas diaphanography detected five such lesions. It is concluded that diaphanography does not satisfy the criteria of a screening procedure, but because the examination is completely innocuous, it may serve as an adjunct to physical examination. In addition, the authors developed a breast model for diaphanography that appears to correlate with the human breast and demonstrates some of the physics and limitations of diaphanography.

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