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Uterine adenosarcoma is a rare malignancy with little data on optimal management. We aimed to clarify the impact of adjuvant therapy in patients with uterine adenosarcoma and identify risk factors for recurrence and death.

We performed a retrospective review of patients undergoing primary evaluation and treatment for uterine adenosarcoma at a single institution from July 1982 through December 2011. Univariate and multivariate analyses were used to identify prognostic factors for progression-free survival (PFS) and overall survival (OS).

We identified 100 patients with uterine adenosarcoma, and 74 patients met the inclusion criteria. On multivariate analysis, sarcomatous overgrowth (SO) and lymphovascular space invasion (LVSI) were predictors of worse PFS and OS. Median PFS and OS were 29.4 and 55.4 months for patients with SO, compared to 105.9 and 112.4 months for …