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  • Title: Prognostic comparison of transoral laser microsurgery for early glottic cancer with or without anterior commissure involvement: A meta-analysis.
    Author: Zhou J, Wen Q, Wang H, Li B, Liu J, Hu J, Liu S, Zou J.
    Journal: Am J Otolaryngol; 2021; 42(2):102787. PubMed ID: 33316724.
    Abstract:
    OBJECTIVES: Transoral laser microsurgery (TLM) has gradually gained approval in the treatment of early glottic cancer. However, the oncological outcomes of TLM for glottic cancer with anterior commissure (AC) involvement are still a controversial topic. We aimed to systematically review the literature on glottic cancer (Tis-T2) with patients who received TLM as first choice therapy and to evaluate several prognostic outcomes in patients with or without AC involvement. METHODS: A systematic literature retrieval was conducted in PubMed, Medline (Ovid) and Web of Science. Risk ratio (RR) between AC involvement (AC+) or without AC involvement (AC-) was assessed and 95% confidence interval(95%CI) was calculated, which was performed on RevMan 5.3. RESULTS: A total of 20 literatures were included when comparing the local recurrence (LR) rate of patients with or without AC involvement, and the results suggested LR matters in group AC+ over group AC- (RR = 2.39, 95%CI = 1.99-2.86, p < 0.00001). The 5-year overall survival(5yOS) rate included 10 studies, and there was no significant difference between AC+ and AC- (RR = 0.98, 95%CI = 0.93-1.02, p = 0.35). The laryngeal preservation rate (LPR) of AC+ was lower than that of AC- (RR = 0.97, 95%CI = 0.94-1.00, p = 0.04). CONCLUSION: The results indicate that the prognosis of early glottic cancer with AC involvement is more likely to have higher local recurrence and lower LPR but no statistical difference in 5yOS rate.
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