title: Malignancies following bilateral salpingo-oophorectomy (BSO).
abstract: OBJECTIVE
  Prophylactic bilateral salpingo-oophorectomy (BSO) is an effective risk reducing measure in ovarian cancer susceptible women. Yet, a small subset of women develop primary peritoneal carcinomatosis (PPC) after BSO. The rates of PPC following non-risk reducing BSO have sparingly been reported.
  
  
  METHODS
  Women who underwent BSO for non-cancer reasons from 1/1/1984 to 12/31/2000 were crossed with the list of cancer diagnoses reported to the Israel National Cancer Registry until 12/31/2001.
  
  
  RESULTS
  Overall, 4128 women at a mean age of 58+/-12 years were analyzed. After a mean of 7.2+/-4 years following BSO, 147 women (3.6%) were diagnosed with cancer: breast cancer in 50 women 62+/-50 months after BSO, and one patient developed PPC, whereas the expected was 0.15 cases. The Standardized Incidence Ratio (SIR) of developing breast cancer was statistically significant lower than expected (SIR 0.71, 95% C.I. 0.44-0.78).
  
  
  CONCLUSIONS
  The rate of post-oophorectomy PPC in average risk population is low, and BSO appears to lower the rate of breast cancer in average risk women.
authors.affiliation: Division of Gynecologic Oncology, Jewish General Hospital - McGill University, Montreal, Canada.
authors.forename: W H
authors.initials: WH
authors.lastname: Gotlieb
authors.forename: M
authors.initials: M
authors.lastname: Barchana
authors.forename: G
authors.initials: G
authors.lastname: Ben-Baruch
authors.forename: E
authors.initials: E
authors.lastname: Friedman
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001943:Breast Neoplasms / Q000209:etiology*; D002277:Carcinoma / Q000209:etiology*; D005187:Fallopian Tubes / Q000601:surgery*; D005260:Female; D020022:Genetic Predisposition to Disease; D006801:Humans; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000235:genetics / Q000517:prevention & control; D010052:Ovariectomy / Q000009:adverse effects*; D010534:Peritoneal Neoplasms / Q000209:etiology*