In Seong Jeong1, Jong-Lyel Roh2, Kyung-Ja Cho3, Seung-Ho Choi1, Soon Yuhl Nam1, Sang Yoon Kim1. 1. Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea. 2. Department of Otorhinolaryngology-Head and Neck Surgery, CHA Bundang Medical Center, CHA University, Seongnam, Gyeonggi-do, 13496, Republic of Korea. jonglyel.roh@gmail.com. 3. Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
Abstract
PURPOSE: Adenoid cystic carcinoma (AdCC) is generally slow growing but has highly metastatic potential to distant organs. Several factors and biomarkers are associated with metastasis and treatment outcomes, although further definition is needed. Therefore, this study aimed to evaluate the risk factors for survival and distant metastasis in patients with head and neck AdCC. METHODS: This study included 125 patients with previously untreated AdCC who underwent primary surgery with or without radiotherapy in our tertiary referral centre. Univariate and multivariate Cox proportional hazard regression analyses were used to identify risk factors associated with overall survival (OS), cause-specific survival (CSS), disease-free survival (DFS), and distant metastasis-free survival (DMFS). Factors associated with OS in patients with distant metastasis were separately analysed. RESULTS: During a median follow-up of 9.8 years (range 3.0-22.6 years), 58 patients (46.4%) had distant metastasis and 29 (23.2%) died of disease. Multivariate analyses showed that lymphovascular invasion, lymph node metastasis, and distant metastasis were independent factors of OS and CSS outcomes (all P < 0.05). The T classification and extranodal extension were independent factors of DFS and DMFS outcomes (P < 0.05). After patients presented with distant metastasis, the median survival was 5.8 years. Multivariate analyses showed that extranodal extension and regional recurrence were independent factors of survival after occurrence of distant metastasis (P < 0.05). CONCLUSION: Several clinicopathological factors can predict distant metastasis and survival of patients with AdCC treated with primary surgery. This may promote post-treatment surveillance in patients with AdCC.
PURPOSE:Adenoid cystic carcinoma (AdCC) is generally slow growing but has highly metastatic potential to distant organs. Several factors and biomarkers are associated with metastasis and treatment outcomes, although further definition is needed. Therefore, this study aimed to evaluate the risk factors for survival and distant metastasis in patients with head and neck AdCC. METHODS: This study included 125 patients with previously untreated AdCC who underwent primary surgery with or without radiotherapy in our tertiary referral centre. Univariate and multivariate Cox proportional hazard regression analyses were used to identify risk factors associated with overall survival (OS), cause-specific survival (CSS), disease-free survival (DFS), and distant metastasis-free survival (DMFS). Factors associated with OS in patients with distant metastasis were separately analysed. RESULTS: During a median follow-up of 9.8 years (range 3.0-22.6 years), 58 patients (46.4%) had distant metastasis and 29 (23.2%) died of disease. Multivariate analyses showed that lymphovascular invasion, lymph node metastasis, and distant metastasis were independent factors of OS and CSS outcomes (all P < 0.05). The T classification and extranodal extension were independent factors of DFS and DMFS outcomes (P < 0.05). After patients presented with distant metastasis, the median survival was 5.8 years. Multivariate analyses showed that extranodal extension and regional recurrence were independent factors of survival after occurrence of distant metastasis (P < 0.05). CONCLUSION: Several clinicopathological factors can predict distant metastasis and survival of patients with AdCC treated with primary surgery. This may promote post-treatment surveillance in patients with AdCC.
Entities:
Keywords:
Adenoid cystic carcinoma; Distant metastasis; Head and neck; Risk factors; Survival
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