Abstract: The present invention involves the measurement of nitric oxide in interstitial fluid extracted by a thin needle from a body tissue, and particularly a human breast. The diffuse nature of nitric oxide means that the sample of body fluid does not need to be taken directly from the lesion to indicate that cancerous cells are present in the vicinity. Therefore, the presence of nitric oxide in the extracted body fluid is a direct indicator of the presence of a cancerous lesion in the vicinity.

Abstract: The present invention comprises methods for cancer detection involving the measurement of temporal periodic changes in blood perfusion, associated with immune response, occurring in neoplastic lesions and their surrounding tissues. Particularly, the method for cancer detection involves the detection of non-neuronal thermoregulation of blood perfusion, periodic changes in the spatial homogeneity of skin temperature, aberrant oscillations of spatial homogeneity of skin temperature and aberrant thermoregulatory frequencies associated with periodic changes in the spatial homogeneity of skin temperature.

Abstract: A method for measuring the periodicity of changes in blood perfusion over large regions of skin so as to identify a locally impaired neuronal control, thereby providing a quick and inexpensive screening test for relatively shallow neoplastic lesions, such as breast cancer, is described. The present method is predicated on infrared imaging of the skin to detect changes in the spectral structure and spatial distribution of thermoregulatory frequencies (TRFs) over different areas of the skin.