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Studies of Kaposi's sarcoma with infrared photography.

Infrared photography, known to be useful in the study of cutaneous vascular structures but not yet extensively explored in the investigation of skin diseases, was used to study lesions of Kaposi's sarcoma in three patients. In all photographs, the tumors appeared as a stain which was lighter in color than the normal skin. In two patients, the infrared photographs showed a tumor identical with that seen clinically. In the third patient, the tumor showed a larger extension than it seemed to have on physical examination. We believe that this technique can be of value in establishing the presence of such tumors and evaluating their actual size.