Risk of specific types of ovarian cancer after borderline ovarian tumors in Denmark: A nationwide study.
Population-based evidence regarding risk of ovarian cancer after a borderline ovarian tumor (BOT) is sparse. We aimed to examine the incidence of specific types of ovarian cancer in women with serous or mucinous BOTs in a nationwide cohort study with up to 36 years of follow-up. Using the nationwide Danish Pathology Data Bank, we identified 4,281 women with a BOT (2,058 serous BOTs and 2,223 mucinous BOTs) in Denmark during 1978-2012. We computed standardized incidence ratios (SIRs) to compare the incidence of ovarian cancer among women with BOTs compared to general population rates. We found that a serous BOT was especially and strongly associated with subsequent serous ovarian cancer (SIR = 9.2; 95% CI: 6.8-12.2), and that a mucinous BOT was strongly related to mucinous ovarian cancer (SIR = 18.6; 95% CI: 10.8-29.8). The SIRs remained elevated ≥10 years after a serous BOT and up to 5-9 years after a mucinous BOT. The increased incidence of serous ovarian cancer in women with a serous BOT was mostly pronounced in women <50 years at the serous BOT diagnosis. In conclusion, women with a serous BOT experience long-term increased incidence of serous ovarian cancer, and women with a mucinous BOT have long-term elevated incidence of mucinous ovarian cancer compared to the general population. This is the first population-based study to show compelling evidence of the histo-specific increased risk of ovarian cancer following specific types of BOTs. Thus, these results are supportive of the hypothesis that BOTs may be precursor lesions to carcinomas of the corresponding histologic type.
Hannibal CG
，Frederiksen K
，Vang R
，Kurman RJ
，Kjaer SK
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Borderline ovarian tumors: Guidelines from the French national college of obstetricians and gynecologists (CNGOF).
It is recommended to classify Borderline Ovarian Tumors (BOTs) according to the WHO classification. Transvaginal and suprapubic ultrasonography are recommended for the analysis of an ovarian mass (Grade A). In case of an undetermined ovarian lesion on ultrasonography, it is recommended to perform a pelvic MRI (Grade A) with a score for malignancy (ADNEX MR/O-RADS) (Grade C) included in the report and to formulate a histological hypothesis (Grade C). Pelvic MRI is recommended to characterize a tumor suspected of being BOT (Grade C). It is recommended to evaluate serum levels of HE4 and CA125 and to use the ROMA score for the diagnosis of indeterminate ovarian mass on imaging (grade A). If there is a suspicion of a mucinous BOT on imaging, serum levels of CA 19-9 may be proposed (Grade C). For Early Stages (ES) of BOT, if surgery without risk of tumor rupture is possible, laparoscopy with protected extraction is recommended over laparotomy (Grade C). For treatment of a bilateral serous ES BOT with a strategy to preserve fertility and/or endocrine function, bilateral cystectomy is recommended where possible (Grade B). For mucinous BOTs with a treatment strategy of fertility and/or endocrine function preservation, unilateral salpingo-oophorectomy is recommended (grade C). For mucinous BOTs treated by initial cystectomy, unilateral salpingo-oophorectomy is recommended (grade C). For serous or mucinous ES BOTs, routine hysterectomy is not recommended (Grade C). For ES BOTs, lymphadenectomy is not recommended (Grade C). For ES BOTs, appendectomy is recommended only in case of a macroscopically pathological appendix (Grade C). Restaging surgery is recommended in cases of serous BOTs with micropapillary architecture and an incomplete abdominal cavity inspection during initial surgery (Grade C). Restaging surgery is recommended for mucinous BOTs after initial cystectomy or in cases where the appendix was not examined (Grade C). If restaging surgery is decided for ES BOTs, the following procedures should be performed: peritoneal washing (grade C), omentectomy (grade B), complete exploration of the abdominal cavity with peritoneal biopsies (grade C), visualization of the appendix and appendectomy in case of a pathological macroscopic appearance (grade C) as well as unilateral salpingo-oophorectomy in case of a mucinous BOT initially treated by cystectomy (grade C). In advanced stages (AS) of BOT, it is not recommended to perform a lymphadenectomy as a routine procedure (Grade C). For AS BOT in a patient with a desire to fall pregnant, conservative treatment involving preservation of the uterus and all or part of the ovary may be proposed (Grade C). Restaging surgery aimed at removing all lesions, not performed initially, is recommended for AS BOTs (Grade C). After treatment, follow-up for a duration greater than 5 years is recommended due to the median recurrence time of BOTs (Grade B). It is recommended that a systematic clinical examination be carried out during follow-up of a treated BOT (Grade B). If the determination of tumor markers is normal preoperatively, the routine dosage of tumor markers in BOT follow-up is not recommended (Grade C). In case of an initial elevation in serum CA 125 levels, it is recommended to monitor CA 125 during follow up (Grade B). In case of conservative treatment, it is recommended to use transvaginal and transabdominal ultrasound during follow up of a treated BOT (Grade B). In the event of a BOT recurrence in a woman of childbearing age, a second conservative treatment may be proposed (Grade C). A consultation with a physician specialized in Assisted Reproductive Technique (ART) should be offered in the case of BOTs in women of childbearing age (Grade C). When possible, a conservative surgical strategy is recommended to preserve fertility in women of childbearing age (Grade C). In the case of optimally treated BOT, there is no evidence to contraindicate the use of ART. The use of hormonal contraception after serous or mucinous BOT is not contraindicated (Grade C). After management of mucinous BOT, for women under 45 years, given the benefit of Hormonal Replacement Therapy (HRT) on cardiovascular and bone risks, and the lack of hormone sensitivity of mucinous BOTs, it is recommended to offer HRT (Grade C). Over 45 years of age, HRT can be prescribed in case of a climacteric syndrome after individual benefit to risk assessment (Grade C).
Bourdel N
，Huchon C
，Abdel Wahab C
，Azaïs H
，Bendifallah S
，Bolze PA
，Brun JL
，Canlorbe G
，Chauvet P
，Chereau E
，Courbiere B
，De La Motte Rouge T
，Devouassoux-Shisheboran M
，Eymerit-Morin C
，Fauvet R
，Gauroy E
，Gauthier T
，Grynberg M
，Koskas M
，Larouzee E
，Lecointre L
，Levêque J
，Margueritte F
，Mathieu D'argent E
，Nyangoh-Timoh K
，Ouldamer L
，Raad J
，Raimond E
，Ramanah R
，Rolland L
，Rousset P
，Rousset-Jablonski C
，Thomassin-Naggara I
，Uzan C
，Zilliox M
，Daraï E
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Increased risk of borderline ovarian tumors in women with a history of pelvic inflammatory disease: A nationwide population-based cohort study.
Some studies suggest that pelvic inflammatory disease (PID) is a potential risk factor for ovarian cancer. However, only few studies have investigated the association between PID and risk of borderline ovarian tumors. We conducted a population-based cohort study to investigate the association between PID and risk of borderline ovarian tumors.
Using various nationwide Danish registries we identified all women in Denmark during 1978-2012, who were born during 1940-1970 (n=1,318,925). Of these, 81,263 women were diagnosed with PID in the study period, and 2736 women had a borderline ovarian tumor (1290 serous and 1344 mucinous). Hazard ratios (HRs) and 95% confidence intervals (CIs) for the association between PID and risk of borderline tumors were estimated using Cox regression models with adjustment for potential confounders.
A history of PID was associated with an increased risk of borderline ovarian tumors (HR=1.39; 95% CI: 1.19-1.61). However, histotype-specific analyses revealed significant variation in risk as PID was only associated with an increased risk of serous borderline tumors (HR=1.85; 95% CI: 1.52-2.24), but not with mucinous borderline tumors (HR=1.06; 95% CI: 0.83-1.35).
PID is associated with an increased risk of serous borderline tumors. Further research on the potential underlying biological mechanisms and on the identification of the subset of women with PID who are at increased risk of serous borderline tumors is warranted.
Rasmussen CB
，Jensen A
，Albieri V
，Andersen KK
，Kjaer SK
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