[Meta-analysis of prognosis of ovarian preserving in young patients with early endometrial cancer].

OBJECTIVE

To discuss the effect of preserving ovaries on the prognosis of young early endometrial cancer patients.

METHODS

Searched English and Chinese databases by computors, including Cochrane library, Embase, PubMed, Web of Science, China National Knowledge Internet (CNKI), data base of Wanfang, China Science and Technology Journal (CSTJ) , and also relevant journals and magazines by hand. Retrieval time from January 1996 to March 2016. In accordance with the inclusion criteria, two independent investigators screened the studies and extracted the relevant data respectively. Then evaluated the quality of included studies. Finally, conducted the meta-analysis with RevMan 5.3 software from cochrane collaboration network, in which heterogeneity test of enrolled studies firstly was completed and combined analysis with effect models according to the heterogeneity secondary. In the light of the result, effect of remaining ovaries on the prognosis (5-year recurrence rate and 5-year overall survival rate) of young early endometrial cancer patients was determined.

RESULTS

Ten trials were included. All of them were cohort studies, a total of 5 299 patients, in which 916 patients' ovaries were remained. Quality assessment of all 10 studies were based on Newcastle-Ottawa Scale (NOS) scale. All of the studies enrolled were of high quality with a score of ≥7. After quality assessment,all studies illustrated the higher the quality. Meta-analysis showed that there was no statistically significant difference between who had ovarian preservation and without preservation in terms of 5-year overall survival rate [96.00% (863/899) vs 96.51% (3 736/3 871); RR=1.00, 95%CI: 0.99-1.02, P=0.792] and the 5-year recurrence rate [2.58% (7/271) vs 4.43% (51/1 150); RR=1.01, 95%CI: 0.46-2.22, P=0.986].

CONCLUSION

Ovarian preservation in young early stage patients of endometrial cancer could not effect the 5-year overall survival rateand the 5-year recurrence rate.