Xiaoke Zhu1, Yu Heng1, Liang Zhou1, Lei Tao1, Ming Zhang1. 1. Department of Otolaryngology, Shanghai Key Clinical Disciplines of Otorhinolaryngology, Eye Ear Nose & Throat Hospital, Fudan University, Shanghai, China.
Abstract
BACKGROUND: This study aimed to create a nomogram for postoperative prediction of the risk of recurrence in laryngeal squamous cell carcinoma patients who received laryngectomy alone and to assess indications for postoperative adjuvant treatments (POAT). METHODS: A retrospective analysis of 1571 newly diagnosed laryngeal carcinoma patients was conducted. Those patients were divided into two groups-the development cohort (n = 1102) and the validation cohort (n = 469). Patients were classified into three subgroups according to their individual points calculated from the nomogram. The efficiency of POAT was examined among various subgroups. RESULTS: Five variables, including pT classification, pN classification, surgical margin, tumor differentiation, and primary location, were included in the nomogram. The C-index was 0.753 in development cohort and 0.744 in validation cohort. Patients were classified into three subgroups with incremental risks of recurrence. In the high-risk group, patients receiving POAT showed significantly better recurrence-free survival (RFS) than did those receiving surgery alone, while POAT was not significantly associated with RFS in either the low- or moderate-risk groups. CONCLUSIONS: The risk of tumor recurrence in patients with laryngeal carcinoma was quantified by our newly constructed nomogram. Patients categorized as high-risk were found to benefit from POAT in RFS.
BACKGROUND: This study aimed to create a nomogram for postoperative prediction of the risk of recurrence in laryngeal squamous cell carcinomapatients who received laryngectomy alone and to assess indications for postoperative adjuvant treatments (POAT). METHODS: A retrospective analysis of 1571 newly diagnosed laryngeal carcinomapatients was conducted. Those patients were divided into two groups-the development cohort (n = 1102) and the validation cohort (n = 469). Patients were classified into three subgroups according to their individual points calculated from the nomogram. The efficiency of POAT was examined among various subgroups. RESULTS: Five variables, including pT classification, pN classification, surgical margin, tumor differentiation, and primary location, were included in the nomogram. The C-index was 0.753 in development cohort and 0.744 in validation cohort. Patients were classified into three subgroups with incremental risks of recurrence. In the high-risk group, patients receiving POAT showed significantly better recurrence-free survival (RFS) than did those receiving surgery alone, while POAT was not significantly associated with RFS in either the low- or moderate-risk groups. CONCLUSIONS: The risk of tumor recurrence in patients with laryngeal carcinoma was quantified by our newly constructed nomogram. Patients categorized as high-risk were found to benefit from POAT in RFS.