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The clinical characteristics and outcomes were retrospectively reviewed, and the DFS rate was estimated using the Kaplan-Meier method. The log-rank test was used to identify the potential prognostic factors, with p &lt; 0.05 considered statistically significant.<\/jats:p><\/jats:sec><jats:sec><jats:title>RESULTS<\/jats:title><jats:p>The mean patient age was 49.7 \u00b1 12.9 years (range 22\u201373 years). Four patients underwent marginal en bloc resection, and 8 patients underwent conventional piecemeal resection. Pathological diagnosis revealed leiomyosarcoma in 9 patients and leiomyoma in 3 patients. Three patients had tumor recurrence at a mean follow-up of 10.4 months (range 7.0\u201315.0 months), while 4 developed metastases at an average of 13.8 months (range 5.5\u201321.3 months) postoperatively. During the mean follow-up of 33.7 months (range 9.6\u201378.5 months), the estimated 1- and 5-year DFS rates were 66.7% and 38.2%, respectively. Albumin loss &gt; 20 g\/L after surgery, Ki-67 positivity &gt; 10%, and piecemeal resection were correlated with worse DFS.<\/jats:p><\/jats:sec><jats:sec><jats:title>CONCLUSIONS<\/jats:title><jats:p>Surgical management of spinal leiomyogenic tumors is challenging due to the high rate of recurrence and metastases. En bloc resection should be performed in eligible patients. Albumin loss &gt; 20 g\/L and the Ki-67 index may be independent factors affecting prognosis.<\/jats:p><\/jats:sec>","DOI":"10.3171\/2019.7.spine19650","type":"journal-article","created":{"date-parts":[[2019,10,4]],"date-time":"2019-10-04T23:08:22Z","timestamp":1570230502000},"page":"89-97","source":"Crossref","is-referenced-by-count":3,"title":["Leiomyogenic tumor of the spine: surgical treatments and long-term outcomes of 12 consecutive patients"],"prefix":"10.3171","volume":"32","author":[{"given":"Shaohui","family":"He","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuduo","family":"Xu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jialin","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yue","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haifeng","family":"Wei","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianru","family":"Xiao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1","series-title":"World Neurosurg","doi-asserted-by":"publisher","first-page":"484","DOI":"10.1016\/j.wneu.2016.12.035","article-title":"Prognostic differences: Epstein-Barr virus-associated primary leiomyosarcoma of the spine versus spinal leiomyosarcoma metastases","volume":"99","author":"Agarwal N","year":"2017","unstructured":"Agarwal N, Hansberry DR, Kavi A, Agarwal P, Baisre A, Goldstein IM: Prognostic differences: Epstein-Barr virus-associated primary leiomyosarcoma of the spine versus spinal leiomyosarcoma metastases. 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