Assignement of the RS peaks to carotenoids or cytochrome c in different amounts has allowed to distinguish healthy tissues from cancerous ones and to discriminate for the first time among the three categories of carcinoma with larger incidence, namely Papillary carcinoma (PTC), follicular variant of Papillary carcinoma (FV-PTC) and Follicular carcinoma (FC). Here, CYCS is linked to thyroid gland papillary carcinoma.