China Journal of Oral and Maxillofacial Surgery ›› 2016, Vol. 14 ›› Issue (2): 149-153.

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A preliminary study on different prognoses of oral squamous cell carcinoma treated with marginal mandibulectomy and segmental mandibulectomy

QIU Yu, LIN Li-song, SHI Bin, ZHU Xiao-feng, HUANG Li, HUANG Yue, LIAO Yun-yang   

  1. Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Fujian Medical University. Laboratory of Facial Plastic and Reconstruction of Fujian Medical University. Fuzhou 350005, Fujian Province, China
  • Received:2015-10-26 Online:2016-03-20 Published:2016-04-06

Abstract: PURPOSE: To compare the different prognosis between marginal mandibulectomy(MG)and segmental mandibulectomy(SG)for oral squamous cell carcinoma (OSCC) and investigate the influential factors of prognosis. METHODS: Eighty-two oral carcinoma operations involving mandibulectomy (between January 2001 and January 2015) were evaluated retrospectively. Of the 82 patients, 39 had marginal mandibulectomy,43 had segmental mandibulectomy. The local recurrent rate and survival rate of these 2 treatment modalities were analyzed by Kaplan-Meier using SPSS 19.0 software package. Cox regression model was used to determine the risk factors for recurrence. RESULTS: Three-year and 5-year local recurrent rate was 29.1% and 39.7% in MG group, and 18.4%, 34.2% respectively in SG group. The local recurrent rate between the two groups had no significant difference (P>0.05). Three-year and 5-year survival rate was 75.2%t and 55.5% in MG group, and 69.2%, 60.7% respectively in SG group. There was no significant difference between the two groups (P>0.05). Lowly differentiated pathologic type was the only influential factor for prognosis in multivariate Cox regression analysis(P=0.001). CONCLUSIONS: Marginal mandibulectomy is a safe and effective operative in appropriate cases. For patients with lowly differentiated OSCC, close follow-up is more important for early detection of recurrence.

Key words: Oral squamous cell carcinoma, Mandible mandibulectomy, Prognosis analysis

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