A Matter of Margins in Oral Cancer-How Close Is Enough?
View abstract on PubMed
Summary
This summary is machine-generated.Positive surgical margins significantly increase distant failure risk in oral cancer patients. A deep margin over 3 mm in close margin cases may offer survival comparable to clear margins.
Area Of Science
- Oncology
- Surgical Pathology
Background
- Risk factors for oral cancer recurrence based on surgical margin status are not well-defined.
- Understanding these factors is crucial for optimizing treatment and improving patient outcomes.
Purpose Of The Study
- To identify risk factors for oral cancer recurrence according to surgical margin status.
- To determine an optimal margin cut-off point for improved survival in patients with close margins.
Main Methods
- Retrospective review of 326 adult patients with primary oral cancer treated between 2009 and 2021.
- Classification of surgical margins as positive (<1 mm), close (1-4.9 mm), or clear (>5 mm).
- Univariate and multivariate analyses to assess recurrence risk factors.
Main Results
- Positive surgical margins were the strongest predictor of distant failure (HR = 7.53), particularly without nodal involvement.
- In the close margin group, a deep margin > 3 mm was associated with disease-free and overall survival comparable to the clear margin group.
- Approximately 51.5% of patients had close margins (1-4.9 mm).
Conclusions
- Surgical margin status is a critical factor in oral cancer recurrence.
- A deep margin of > 3 mm may be sufficient in select oral cancer cases, potentially redefining 'close' margins.
- Further prospective studies are needed to validate these findings and guide clinical practice.

