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Margin status revisited in vulvar squamous cell carcinoma
N C Te Grootenhuis1, A W Pouwer2, G H de Bock3
1University of Groningen, University Medical Center Groningen, Groningen, Department of Obstetrics and Gynecology, the Netherlands.
Gynecologic Oncology
|May 22, 2019
Summary
Local recurrence of vulvar squamous cell carcinoma is common. The presence of dVIN (differentiated vulvar intraepithelial neoplasia) in surgical margins, not margin distance, significantly increases recurrence risk.
Area of Science:
- Gynecologic Oncology
- Pathology
- Surgical Oncology
Background:
- Vulvar squamous cell carcinoma (VSCC) is a significant cause of morbidity.
- Local recurrence remains a challenge in VSCC management.
- Understanding factors influencing recurrence is crucial for patient outcomes.
Purpose of the Study:
- To investigate the incidence of local recurrence in VSCC.
- To determine the relationship between pathologic margin status and local recurrence.
- To identify specific margin characteristics associated with recurrence risk.
Main Methods:
- Retrospective analysis of 287 patients with primary VSCC treated between 2000-2010.
- Independent review of pathology slides by expert gynecopathologists.
- Univariable and multivariable Cox-regression analyses to compare recurrence rates.
Main Results:
- The 10-year actuarial local recurrence rate was 42.5%.
- Pathologic tumor-free margin distance did not significantly impact local recurrence risk.
- Presence of dVIN (differentiated vulvar intraepithelial neoplasia) and/or LS (lichen sclerosus) in the margin was associated with a significantly higher risk of local recurrence (HR 2.76).
- Higher FIGO stage (II or higher) was also linked to increased local recurrence (HR 1.62).
Conclusions:
- Local recurrences are frequent in VSCC patients.
- dVIN in the surgical margin is a stronger predictor of recurrence than margin distance.
- Physicians should maintain awareness of recurrence risk and the need for lifelong follow-up, especially for patients with dVIN in margins.
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