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  • Title: Prognostic factors in soft tissue leiomyosarcoma of the extremities: a retrospective analysis of 42 cases.
    Author: Massi D, Beltrami G, Mela MM, Pertici M, Capanna R, Franchi A.
    Journal: Eur J Surg Oncol; 2004 Jun; 30(5):565-72. PubMed ID: 15135488.
    Abstract:
    AIMS: Soft tissue leiomyosarcomas (LMS) are rare tumours which are associated with a poor prognosis. The goals of the present study were to describe the clinico-pathological and prognostic features of 42 patients affected by soft tissue LMS of the extremities. METHODS: The following clinical and pathological parameters were analysed: age, sex, site, size, depth, previous surgical procedures, stage, histological type, nuclear atypia, grade, mitotic activity, necrosis, surgical margins, therapy. Disease-free survival rates were calculated. RESULTS: The overall 2-year and 5-year disease free survival rates were 42.3% and 32.6%, respectively. By univariate analysis, tumour size (< or =10 cm vs. >10 cm; p = 0.01), average mitotic rate (< or =19/10 HPF vs. >19/10 HPF; p = 0.05), type of excision (wide vs. marginal or intralesional; p = 0.001) and adjuvant radiotherapy (none vs. brachytherapy+external beam radiotherapy vs. external beam radiotherapy; p = 0.02) were significantly correlated with disease progression. By multivariate analysis, the only factor that was found to be an independent predictor of disease relapse was type of excision (p = 0.001). CONCLUSIONS: Large tumour size and high mitotic rate resulted adverse prognostic factors. Adjuvant radiation therapy, in combination with wide surgical excision, allowed the best chance of cure.
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