4기 설암 환자군의 치료 결과 및 예후인자 분석: T, N 조합을 이용한 하위그룹화
Treatment Outcomes and Prognostic Factors in Stage IV Tongue Cancer: Subgroup Analysis According to T and N Combination
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Background and Objectives We analyzed the treatment results and prognostic factors of stage IV oral tongue squamous cell carcinoma (OTSCC) patients and explored the existence of subgroups with distinctive prognoses. In addition, the outcome of salvage therapy was ana- lyzed in recurrent cases, and the survival rates and prognostic factors were investigated. Subjects and Method This study was conducted on patients who were diagnosed with OTSCC and underwent surgery at our hospital between June 2005 and January 2020. A total of 144 patients with stage IV OTSCC was enrolled. Results A total of 64 recurrences, local (6), regional (21), distant metastasis (33), and loco- regional (4), occurred. Seventy-five patients died because of disease progression during the course of study. The 5-year recurrence-free survival rate was 54.5%, and the 5-year disease- specific survival rate was 49.2%. Surgical margins, lymphovascular invasion (LVI), T classifi- cation, and lymph nodes (LNs) metastasis exhibited significant correlation with mortality. LVI and advanced T were statistically important factors for predicting distant metastasis. The treatment outcome of the T4N0 patient group without LN metastasis fared the best, while the treatment outcome of the T4N1-3 patient group with advanced T and N findings was the worst. Conclusion The major type of treatment failure in stage IV OTSCC patients was distant me- tastasis, and the related predictors of distant metastasis were LVI and advanced T. In the stage IV OTSCC patient group, there were subgroups with distinct prognosis according to the combina- tion of T and N classification. The T4N0 group had the best survival rate, and the T4N1-3 group had the worst prognosis.
Abstract
Background and Objectives We analyzed the treatment results and prognostic factors of stage IV oral tongue squamous cell carcinoma (OTSCC) patients and explored the existence of subgroups with distinctive prognoses. In addition, the outcome of salvage therapy was ana- lyzed in recurrent cases, and the survival rates and prognostic factors were investigated. Subjects and Method This study was conducted on patients who were diagnosed with OTSCC and underwent surgery at our hospital between June 2005 and January 2020. A total of 144 patients with stage IV OTSCC was enrolled. Results A total of 64 recurrences, local (6), regional (21), distant metastasis (33), and loco- regional (4), occurred. Seventy-five patients died because of disease progression during the course of study. The 5-year recurrence-free survival rate was 54.5%, and the 5-year disease- specific survival rate was 49.2%. Surgical margins, lymphovascular invasion (LVI), T classifi- cation, and lymph nodes (LNs) metastasis exhibited significant correlation with mortality. LVI and advanced T were statistically important factors for predicting distant metastasis. The treatment outcome of the T4N0 patient group without LN metastasis fared the best, while the treatment outcome of the T4N1-3 patient group with advanced T and N findings was the worst. Conclusion The major type of treatment failure in stage IV OTSCC patients was distant me- tastasis, and the related predictors of distant metastasis were LVI and advanced T. In the stage IV OTSCC patient group, there were subgroups with distinct prognosis according to the combina- tion of T and N classification. The T4N0 group had the best survival rate, and the T4N1-3 group had the worst prognosis.
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