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442 Risk reduction salpingo-oophorectomy in BRCA mutation carriers. Presurgical and pathology findings. A prospective cohort study
  1. MDLR Oliver1,
  2. S Aragon-Sanchez2,
  3. L Alvaro3,
  4. M De Miguel-Reyes4,
  5. E Felipe-Pardo5,
  6. J Montero5,
  7. M Martinez-Lopez6,
  8. C Álvarez-Conejo1,
  9. G López-Gonzalez1,
  10. B Gil-Ibañez1,
  11. JM Seoane-Ruiz1 and
  12. A Tejerizo-García1
  1. 1Hospital Universitario 12 de Octubre, Gynecology Oncology, Spain
  2. 2Hospital Universitario 12 de Octubre, Breast Cancer, madrid, Spain
  3. 3Hospital Universitario 12 de Octubre, Breast Cancer, Spain
  4. 4Hospital Universitario 12 de Octubre, Genetics, Spain
  5. 5Hospital Universitario 12 de Octubre, Spain
  6. 6Hospital Universitario 12 de Octubre, Pathology, Spain


Introduction/Background*Women with germline mutations in the BRCA ½ genes have a lifetime increased risk of ovarian cancer, 36 - 63% and 10-27% respectively. Accordingly, once childbearing is completed, Risk Reduction Salpingo-oophorectomy (RRSO) is recommended in this group of patients. The purpose of this study was to determine the presurgical findings and the incidence of Serous Tubal intraepithelial carcinoma (STIC) and occult carcinomas in BRCA mutations carriers in whom a RRSO was performed.

Methodology Prospective study that included patients with documented BRCA mutation who accepted RRSO between January 2011 to January 2021 at the Hospital Universitario 12 de Octubre. The study was approved by the ethics committee of the institution. During the month prior to surgery, a systematic ultrasound (US) and determination of serum Ca 125 levels were performed. Specialized gynecologists performed RRSO by laparoscopy. Unilateral or bilateral adnexectomy was performed according to the surgical history of each patient. Pelvic washing was done in all cases at the beginning of the procedure and tubes were removed at the uterine insertion. All the histologic exams were performed by pathologists subspecialized in Gynecologic Oncology and the sectioning and extensively examining of the fimbriated end protocol (SEE-FIM protocol) was applied. STIC was defined using a combination of morphologic evaluations to distinguish in from p53 signatures, STIL and invasive carcinoma. All statistical analysis was performed by Stata/IC 13.0 for Windows.

Result(s)*A total of 115 were included. Of them, 50.4% had BRCA 1 mutation and 49.6% BRCA 2 mutation. Mean (+/- Standard deviation, SD) age at surgery was 49.2 (5.8) years. Of note, 40.9% underwent surgical menopause. The median Ca-125 value prior to surgery was 29.4 u/L. Adnexal findings in presurgery ultrasound were normal (104, 90.4%) or benign cyst (11, 17.4%). Also, endometrial polyps were found in 3.5% (3) of patients. Pathologic exam showed STIC in 5 (4.5%) patients and invasive ovarian carcinoma in 1 (0.9%).

Conclusion*Currently, RRSO is the only tool to reduce the risk of ovarian cancer in BRCA mutations carriers. However, the incidence of STIC after RRSO is not very high.

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