Amy Finch et al in 2014, showed that the prevalence of occult carcinomas for BRCA1 carriers was almost 1,5%, if the surgery has been performed before the age of 40, while this percentage may be increased to 3,8% for women who undergo prophylactic bilateral salpingoophorectomy between 40 and 49 years. This evidence concerns the gene BRCA1 and carcinoma.