c-KIT expression in columnar cell lesions of the breast accompanied by benign and malignant breast diseases

As there is a reduction in c-KIT expression with malignant transformation of breast epithelium, c-KIT is believed to play a role in breast carcinogenesis. Furthermore, similar c-KIT expression patterns in CCLs accompanying malignant breast diseases suggest that at least some CCLs could reflect a premalignant status of breast carcinoma. However, the significance of c-KIT expression in CCLs and its relationship to breast carcinogenesis should be evaluated in follow up studies investigating larger series.