Journal
HEAD AND NECK-JOURNAL FOR THE SCIENCES AND SPECIALTIES OF THE HEAD AND NECK
Volume -, Issue -, Pages -Publisher
WILEY
DOI: 10.1002/hed.27485
Keywords
AJCC; oral cancer; perineural invasion; squamous cell carcinoma; survival
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This study validates the impact of multifocal perineural invasion (PNI) in patients with oral squamous cell carcinoma (OSCC). The results indicate that multifocal PNI is associated with an increased risk of death due to OSCC and overall mortality.
BackgroundPerineural invasion (PNI) in oral squamous cell carcinoma (OSCC) does not contribute to the current American Joint Committee on Cancer 8th edition (AJCC8) staging manual. This study seeks to validate the effect of multifocal PNI in a large cohort of patients. MethodsPatients undergoing primary surgical treatment of OSCC with curative intent between 1995 and 2022 was retrieved from two Australian head and neck databases. PNI was categorized as a single focus or multiple foci. Study end points included disease-specific survival (DSS) and overall survival (OS). ResultsComplete data for survival analysis was available in 993 patients. Multifocal PNI was associated with a 61% increased risk of death due to OSCC (HR 1.61, 95% CI 1.11-2.33, p = 0.014) and a 32% increased risk of death from any cause (HR 1.32, 95% CI 1.01-1.73, p = 0.045). ConclusionsMultifocal PNI is a significant predictor of survival in OSCC.
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