Safina Ali1, Frank L Palmer1, Nora Katabi2, Nancy Lee3, Jatin P Shah1, Snehal G Patel1, Ian Ganly1. 1. Head and Neck Service, Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, New York. 2. Department of Pathology, Memorial Sloan-Kettering Cancer Center, New York, New York. 3. Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York.
Abstract
OBJECTIVES: To report long-term local control in patients with adenoid cystic cancer (ACC) of the head and neck managed by surgery and identify factors predictive for local failure. STUDY DESIGN: Single-institution retrospective cohort study. METHODS: Eighty-seven patients who had surgery for ACC between 1985 and 2009 were identified. Patient, tumor, and treatment characteristics were recorded. Local recurrence-free survival (LRFS) was recorded by the Kaplan-Meier method. Predictors of local control were identified. RESULTS: The median age was 54 years. Seventy-two (83%) patients had perineural invasion, 61 (70%) had close/positive margins, and 58 (67%) had pT 1T2. Fifty-nine (68%) patients had postoperative radiation therapy (PORT). With a median follow-up of 85 months, the 10-year LRFS was 78.7%. There were 14 local recurrences. On multivariable analysis, pathological tumor (T)3T4 stage and no PORT were independent predictors for local failure. Patients with no PORT had a 13-fold increased risk of local failure compared to patients treated with PORT (P = 0.003) after adjusting for stage. CONCLUSION: After adjusting for T stage, patients who do not get PORT are more likely to have local recurrence. LEVEL OF EVIDENCE: 4. Laryngoscope, 127:2265-2269, 2017.
OBJECTIVES: To report long-term local control in patients with adenoid cystic cancer (ACC) of the head and neck managed by surgery and identify factors predictive for local failure. STUDY DESIGN: Single-institution retrospective cohort study. METHODS: Eighty-seven patients who had surgery for ACC between 1985 and 2009 were identified. Patient, tumor, and treatment characteristics were recorded. Local recurrence-free survival (LRFS) was recorded by the Kaplan-Meier method. Predictors of local control were identified. RESULTS: The median age was 54 years. Seventy-two (83%) patients had perineural invasion, 61 (70%) had close/positive margins, and 58 (67%) had pT 1T2. Fifty-nine (68%) patients had postoperative radiation therapy (PORT). With a median follow-up of 85 months, the 10-year LRFS was 78.7%. There were 14 local recurrences. On multivariable analysis, pathological tumor (T)3T4 stage and no PORT were independent predictors for local failure. Patients with no PORT had a 13-fold increased risk of local failure compared to patients treated with PORT (P = 0.003) after adjusting for stage. CONCLUSION: After adjusting for T stage, patients who do not get PORT are more likely to have local recurrence. LEVEL OF EVIDENCE: 4. Laryngoscope, 127:2265-2269, 2017.
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