CD83 and Fibroadenoma: From analysis on the material from group D (i.e. users of oral hormonal contraceptives), we found an average of 363.25 (SD ± 150.08) cells expressing CD83 in the fibroadenoma, while in the adjacent breast tissue, the average was 191.12 (SD ± 136.71) cells expressing CD83 (P = 0.044).