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  • Title: Induction therapy followed by surgical resection in Stage-III thimic epithelial tumors: Long-term results from a multicentre analysis of 108 cases.
    Author: Cardillo G, Lucchi M, Marulli G, Infante M, Leuzzi G, Mussi A, Carleo F, Facciolo F, Voulaz E, Rea F, Rapicetta C, Lococo F.
    Journal: Lung Cancer; 2016 Mar; 93():88-94. PubMed ID: 26898620.
    Abstract:
    INTRODUCTION: So far no specific oncological strategies have been validated for locally-advanced epithelial thymic tumors (TETs). We herein report the long-term results of a large multicentric experience adopting a multimodal treatment. METHODS: From 01/1990 to 12/2010, the clinical data of 108 Masaoka Stage-III TETs patients surgically treated after induction therapy (IT) were retrospectively reviewed. Different IT-regimens were administered: ADOC (32 pts); PAC (38 pts); CEE (38 pts). Radiotherapy was concurrently used in 5 patients only. The end-points of the study were the evaluation of: (1) resectability; (2) overall long-term survival (LTS) and disease-free survival (DFS); and (3) independent prognostic factors. The Mann-Whitney and Fisher's exact tests were applied to test the associations. Survival analysis was performed by the Kaplan-Meier method and log-rank test. RESULTS: Mean age and male/female ratio were 51 ± 13 years and 61/47, respectively. World Health Organization (WHO) histotype was: A in 6 pts (5.6%), AB in 18 (16.7%), B1 in 15 (13.9%), B2 in 26 (24.1%), B3 in 23 (21.3%), and thymic carcinoma in 20 (18.5%). Thirty-day mortality was 1.8%. A total of 81 (75%) had R0-resection, 11 (10.2%) R1 and 16 (14.8%) R2-resection. Adjuvant therapy was performed in 71 patients. During the follow-up a relapse of disease was observed in 38 pts(35.2%). Five-years DFS and LTS were 69.3% and 79.3%, respectively. At univariate analysis, WHO-type B3/C ("high-risk") TETs (p=0.001) and recurrence of disease (p=0.02) were predictors of poor LTS while only a slight correlation was found for R-status and "CHT-regimen type" (p=0.097 and p=0.067, respectively). At multivariate analysis WHO "high-risk" TETs (H.R.5.73;C.I.:1.77-18.57) and ADOC-regimen (H.R.2.84;C.I.:1.37-5.86) were independent predictors of poor survival. CONCLUSIONS: A multimodal treatment for Stage-III thymic tumors may achieve a rewarding survival. WHO-Histology seems to be the most important prognostic factor.
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