Clinical Application
Treatment and analysis of prognostic factors of stage Ⅱ and Ⅲ undifferentiated high-grade pleomorphic sarcoma in extremities and trunk
Zhang Xinxin, Xu Libin, Xu Songfeng, Zhao Zhenguo, Fang Hui, Ma Peiqing, Liu Ting, Zhang Shuguang, Yu Shengji
Published 2019-02-23
Cite as Chin J Oncol, 2019, 41(2): 140-145. DOI: 10.3760/cma.j.issn.0253-3766.2019.02.012
Abstract
ObjectiveTo evaluate the efficacy and prognostic factors of comprehensive treatment of undifferentiated high grade pleomorphic sarcoma (UHGPS) in extremities and trunk, including surgery, radiotherapy and chemotherapy.
MethodsA retrospective analysis and follow-up of 131 UHGPS cases with clinical stage Ⅱ or Ⅲ in extremities and trunk soft tissue was performed to analyze the prognostic factors. Survival data were collected through follow-up. The survival rate was calculated with life table method and Kaplan-Meier survival curves were drawn. Survival rate between the two groups was compared using Log rank test. The multivariate analysis was performed using Cox regression model.
ResultsThe median survival time of 131 patients was 41.6 months. The 1-year, 3-year and 5-year survival rates were 95.0%, 82.0%, and 77.0%, respectively. The 5-year recurrence-free survival rate was 81.0%, and the 5-year metastasis-free survival rate was 72.0%. Univariate analysis showed that the tumor size, initial or recurrence, surgical margin, AJCC stage, and with/without standard treatment were associated with overall survival (all P<0.05). Stratification analysis according to the American Joint Committee of Cancer (AJCC) stage showed that 5-year survival rate of stage Ⅱ patients with radiotherapy was 100.0%, which was higher than that of patients without radiotherapy (79.6%) and the difference was statistically significant (P=0.010); but no statistical significance of radiotherapy for stage Ⅲ and chemotherapy for stage Ⅱ or Ⅲ patients (all P>0.05). The multivariate analysis showed surgical margin (HR=4.220, P=0.002), with/without standard treatment (HR=4.040, P=0.030) were independent risk factors associated with prognosis of UHGPS patients.
ConclusionsFor UHGPS with stage Ⅱ or stage Ⅲ in extremities and trunk soft tissue, patients with complete resection and standard treatment have improved prognosis. Therefore, standard treatment, including extensive resection for the first surgery, should be performed according to expert consensus in order to increase the long-term survival rate. Adjuvant radiotherapy should be performed for stage Ⅱ patients.
Key words:
Undifferentiated high-grade pleomorphic sarcoma; Extremities; Trunk; Clinical stage; Treatment; Prognosis
Contributor Information
Zhang Xinxin
Department of Orthopaedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
Xu Libin
Department of Orthopaedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
Xu Songfeng
Department of Orthopaedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
Zhao Zhenguo
Department of Orthopaedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
Fang Hui
Department of Radiotherapy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
Ma Peiqing
Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
Liu Ting
Department of Orthopaedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
Zhang Shuguang
Department of Orthopaedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
Yu Shengji
Department of Orthopaedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China