首页|Recurrence and cancerization of ameloblastoma: multivariate analysis of 87 recurrent craniofacial ameloblastoma to assess risk factors associated with early recurrence and secondary ameloblastic carcinoma

Recurrence and cancerization of ameloblastoma: multivariate analysis of 87 recurrent craniofacial ameloblastoma to assess risk factors associated with early recurrence and secondary ameloblastic carcinoma

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Objective:The recurrence and progression of ameloblastoma are unpredictable.Therefore,we examined the influence of clinical factors on recurrence time and analyzed the clinical factors associated with early recurrence and cancerization.We then developed a staging system to predict early recurrence and cancerization.Methods:All of the primary craniofacial ameloblastoma patients treated in Shanghai Ninth People's Hospital,Shanghai Jiao Tong University School of Medicine were recorded.There were 87 recurrent cases used to create a staging system and tested in a Cox regression analysis for risk factors associated with early recurrence or cancerization following surgery.Results:There were 890 craniofacial ameloblastoma patients,and 72 cases had recurrence.There were also 15 cases with cancerous recurrence.The overall recurrence rate was 9.78％,and the cancer rate was 1.69％.The primary cases were classified into the following 3 stages based on clinicopathological features:stage Ⅰ,the maximum tumor diameter ≤6 cm;stage Ⅱ,the maximum diameter of tumor ＞6 cm or tumor invasion to the maxilla sinus/orbital floor/soft tissue;and stage Ⅲ,tumor invasion of the skull base or metastasis into regional lymph nodes.When the method of surgery was controlled by partial correlation,the staging had significance with recurrence time (P=0.004).The Cox analysis showed the tumor stage was correlated with recurrence time (P=0.027) and cancerization time (P=0.002).However,the surgical method did not influence the recurrence rime when adjusted for cofounding variables.Conclusions:Tumor larger than 6 cm and invasion to soft tissues or adjacent anatomical structures are associated with early recurrence.This staging system can be used to predict the risk factors of early recurrence and cancerization in ameloblastoma patients.

Recurrenceameloblastomastageameloblastic carcinomacancerization

Rong Yang、Zheqi Liu、Sandhya Gokavarapu、Canbang Peng、Wei Cao、Tong Ji

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Department of Oral and Maxillofacial-Head and Neck Oncology, Shanghai Stomatology Key Laboratory, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China

Head & Neck Oncology Reconstructive Surgery, Department of Surgical Oncology, Krishna Institute of Medical Science, Hyderabad 500003, India

This work was supported by grants from the National Natural Science Foundation of ChinaThis work was supported by grants from the National Natural Science Foundation of Chinaprojects of the Shanghai Natural Science FoundationShanghai Summit & Plateau Disciplines

816727458167100915ZR1424600

2017

10.21147/j.issn.1000-9604.2017.03.04

中国癌症研究(英文版)
中国抗癌协会 北京市肿瘤研究所

中国癌症研究(英文版)

CSTPCDCSCDSCI
影响因子：1.592
ISSN：1000-9604
年,卷(期)：2017.29(3)
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