Ovary [38], indicating a possibly different role of ALDH1 in ovarian cancer. Our present immunohistochemical study of 248 wellcharacterized patients showed high levels of ALDH1 expression in ovarian carcinoma cells, which were observed in 15.7 of the total cases, was associated with early-stage tumor, well-differentiated tumor and better survivals, although ALDH1 was not an independent risk fact