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Salvage Surgery for Recurrent Tongue Cancer With Contralateral Neck Metastasis
Zhuowei Tian1, Shizhe Wang2, Ronghui Xia3
1Resident, Department Head, Professor, Department of Oral & Maxillofacial - Head & Neck Oncology, 9(th) People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China; and Resident, Department of Oral & Maxillofacial - Head & Neck Oncology, 9(th) People's Hospital (Fengcheng Branch hospital), Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Purpose:
Treatment recommendations have been widely reported for primary tongue squamous cell carcinoma (TSCC) with contralateral neck metastases (CNMs), but little is known concerning recurrent TSCCs with CNMs, especially in patients who have undergone ipsilateral neck dissection. The aim of this study was to estimate overall survival (OS) and to identify prognostic factors associated with OS in patients treated for recurrent TSCCs.
Patients And Methods:
We performed a retrospective cohort study of patients who underwent salvage surgery (SS) for recurrent TSCC in our institution between January 2010 and December 2014. Before SS, all patients had been surgically treated for primary TSCC with ipsilateral neck dissection. The primary outcome variable was OS, and the patients were grouped by the primary predictor variable of CNM status for comparison. Other heterogeneous variables of interest included demographics, medical histories, clinicopathologic characteristics, surgical data, and adjuvant treatment modalities. In addition, the midline involvement and anatomic subsites of local recurrences were evaluated. Univariate log-rank and Cox regression tests were used for statistical analyses.
Results:
The study sample included 177 subjects with a mean age of 55.4 years, and 44.6% were males. The median OS was 18 months. Within the entire cohort, the incidence of CNM was 23.7% (n = 42), with an inclination (n = 30) for contralateral level I or II. Factors associated with improved survival included CNM (hazard ratio [HR], 2.108; 95% confidence interval [95% CI], 1.341 to 3.315; P = .001), disease-free interval (HR, 0.601; 95% CI, 0.387 to 0.934; P = .023), and local recurrence subsite score (HR, 3.276; 95% CI, 0.924 to 11.623; P = .001).
Conclusions:
Patients with both recurrent TSCCs and CNMs had a dismal prognosis (OS rate, 16.2%) compared with those without CNMs (OS rate, 52.7%). SS for TSCC patients with collateral failures should be used cautiously because of the very unfavorable outcomes.
