Methods. After all eligibility criteria were met, 453 cases were evaluable and analyzed for prognostic factors.Results. Of the 301 mixed mesodermal tumors (MMT), 167 were homologous (HO), and 134 were heterologous (HE). Fifty-nine tumors were leiomyosarcomas (LM). The remaining 93 sarcomas were predominantly stromal cell and adenosarcomas. For this study, only the MMT or LM tumors were analyzed. The recurrence rate for all MMT was 53% (HO, 44%; HE, 63%). The recurrence rate for LM was 71%. The site of the first recur-

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