Unilateral versus bilateral lymph-nodal metastases and oncologic outcome in vulvar cancer patients.

Papadia, Andrea; Ehm, Lisa; Gasparri, Maria Luisa; Wang, Junjie; Radan, Anda Petronela; Mueller, Michael D. (2020). Unilateral versus bilateral lymph-nodal metastases and oncologic outcome in vulvar cancer patients. Journal of cancer research and clinical oncology, 146(7), pp. 1877-1881. Springer 10.1007/s00432-020-03196-9

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PURPOSE

To evaluate the difference in oncologic outcome between vulvar cancer patients with uni- and bilateral inguino-femoral lymph nodal involvement and to identify factors affecting their oncologic outcome MATERIALS AND METHODS: Patients who underwent inguino-femoral lymphadenectomy for vulvar cancer were classified into three groups according to their lymph nodal status at the histology analysis (negative, positive one side, positive bilaterally). PFS and OS survival were calculated using the Kaplan-Meier method. Univariate and multivariate analyses were performed to analyze factors predicting overall survival and progression-free survival. Multivariable models were used for variables reporting a p value ≤ 0.1 at the univariate analysis. p values ≤ 0.05 were considered statistically significant.

RESULTS

One hundred and forty-six patients were considered for the analysis. Patients with bilaterally negative lymph nodes had significantly longer PFS and OS as compared to patients with unilateral and bilateral involvement. Patients with unilateral lymph nodal involvement had better PFS than patients with bilateral lymph nodal involvement. Among these patients, the difference in the OS approached but did not reach statistical significance. At the multivariate analysis, the tumor size affected PFS and lymph nodal involvement affected OS.

CONCLUSION

Vulvar cancer patients with bilateral positive lymph nodes have worse oncologic outcome as compared to patients with unilateral lymph nodal involvement; similarly, patients with unilateral lymph nodal involvement have worse oncological outcome as compared to patients with bilateral negative lymph nodes. Furthermore, tumor size and lymph nodal status are independent factors predicting recurrence rate and overall survival, respectively.

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