Long-term local control rates of patients with adenoid cystic carcinoma of the head and neck managed by surgery and postoperative radiation
- PMID: 28322454
- PMCID: PMC5661868
- DOI: 10.1002/lary.26565
Long-term local control rates of patients with adenoid cystic carcinoma of the head and neck managed by surgery and postoperative radiation
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.
Keywords: Salivary gland; adenoid cystic carcinoma; local recurrence; radiotherapy.
© 2017 The American Laryngological, Rhinological and Otological Society, Inc.
Conflict of interest statement
Conflicts of interest: none
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