Important prognostic factors in leiomyosarcoma survival: a National Cancer Database (NCDB) analysis.

Clinical & Translational Oncology : Official Publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico
Jonathan GooteePeter Silberstein

Abstract

Leiomyosarcoma (LMS) is an aggressive, malignant mesenchymal tumor with characteristic smooth muscle lineage accounting for 10-20% of all soft tissue tumors. The goal of this study is to determine the impact of prognostic factors on leiomyosarcoma survival irrespective of primary anatomical site. There were a total of 7154 patients with primary leiomyosarcoma identified and analyzed from the National Cancer Database. Descriptive statistics, median survival, and 5- and 10-year survival probabilities were calculated along with a Cox proportional hazard model to determine independent prognostic factors. In this study, females comprised 68.3% of the cohort with a median age of 58 years. The most common primary anatomical sites were the extremities followed by female reproductive organs, abdomen, pelvis, thorax or lung, and head or neck. Tumors localized in the female reproductive organs had the worst survival (5-year survival probability: 45.3%), while tumors localized in the extremities had the best survival outcomes (5-year survival probability: 73.4%). Surgery with adjuvant radiation yielded better outcomes compared to surgery alone (HR 0.82, 95% CI 0.74-0.91). Microscopic and macroscopic margins resulted in a 32% and a 134% inc...Continue Reading

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