The prevalence of occult leiomyosarcoma in women undergoing presumed fibroid surgery and outcomes after morcellation

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Purpose of reviewTo review the data-derived prevalence rates for occult leiomyosarcoma (LMS), and outcomes for women who have these tumors inadvertently morcellated.Recent findingsIn 2014, the Food and Drug Administration presented data showing the prevalence rates of occult LMS at 2.02/1000 surgeries for presumed benign fibroids. They also attributed poorer outcomes for women undergoing power morcellation of these tumors. Two more recent meta-analyses have shown much lower rates, as low as one in 8300 surgeries when including only prospective studies, and one in 1428 surgeries when including both prospective and retrospective studies. When looking at outcomes, both studies show no difference in outcomes when comparing power or any other type of morcellation. The most recent data suggest that even intact removal has no advantage when looking at mortality rates.SummaryPrevalence of occult LMS remains quite rare, but outcomes after intact removal or any type of morcellation appear to be no different.

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