Open Access

A clinicopathological review of 33 patients with vulvar melanoma identifies c-KIT as a prognostic marker

  • Authors:
    • Viola A. Heinzelmann-Schwarz
    • Sheri Nixdorf
    • Mehrnaz Valadan
    • Monica Diczbalis
    • Jake Olivier
    • Geoff Otton
    • André Fedier
    • Neville F. Hacker
    • James P. Scurry
  • View Affiliations

  • Published online on: February 14, 2014     https://doi.org/10.3892/ijmm.2014.1659
  • Pages: 784-794
  • Copyright: © Heinzelmann-Schwarz et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY_NC 3.0].

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Abstract

Vulvar melanoma is the second most common vulvar cancer. Patients with vulvar melanoma usually present with the disease at a late stage and have a poor prognosis. The prognostic predictors reported in the literature are not unequivocal and the role of lichen sclerosus and c-KIT mutations in the aetiology of vulvar melanoma is unclear. Breslow staging currently seems to be the most adequate predictor of prognosis. We thus performed a clinicopathological and literature review to identify suitable predictors of prognosis and survival and investigated the expression of c-KIT (by immunohistochemistry) in patients with vulvar melanoma (n=33) from the Gynaecological Cancer Centres of the Royal Hospital for Women (Sydney, Australia) and John Hunter Hospital (Newcastle, Australia). Our series of 33 patients fitted the expected clinical profile of older women: delayed presentation, high stage, limited response to treatment and poor prognosis. We identified 3 patients (9.1%) with lichen sclerosus associated with melanoma in situ, although no lichen sclerosus was found in the areas of invasive melanoma. No patient had vulvar nevi. We identified a) Breslow's depth, b) an absence of any of the pathological risk factors, such as satellitosis, in-transit metastasis, lymphovascular space invasion (LVSI) and dermal mitosis, c) removal of inguino-femoral lymph nodes, d) lateral margin of >1 cm, and e) c-KIT expression as valuable prognostic predictors for disease-free survival. We conclude that c-KIT expression is, apart from Breslow's depth, another valuable predictor of prognosis and survival. Lichen sclerosus may be associated with vulvar melanoma.
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2014-April
Volume 33 Issue 4

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Heinzelmann-Schwarz VA, Nixdorf S, Valadan M, Diczbalis M, Olivier J, Otton G, Fedier A, Hacker NF and Scurry JP: A clinicopathological review of 33 patients with vulvar melanoma identifies c-KIT as a prognostic marker. Int J Mol Med 33: 784-794, 2014.
APA
Heinzelmann-Schwarz, V.A., Nixdorf, S., Valadan, M., Diczbalis, M., Olivier, J., Otton, G. ... Scurry, J.P. (2014). A clinicopathological review of 33 patients with vulvar melanoma identifies c-KIT as a prognostic marker. International Journal of Molecular Medicine, 33, 784-794. https://doi.org/10.3892/ijmm.2014.1659
MLA
Heinzelmann-Schwarz, V. A., Nixdorf, S., Valadan, M., Diczbalis, M., Olivier, J., Otton, G., Fedier, A., Hacker, N. F., Scurry, J. P."A clinicopathological review of 33 patients with vulvar melanoma identifies c-KIT as a prognostic marker". International Journal of Molecular Medicine 33.4 (2014): 784-794.
Chicago
Heinzelmann-Schwarz, V. A., Nixdorf, S., Valadan, M., Diczbalis, M., Olivier, J., Otton, G., Fedier, A., Hacker, N. F., Scurry, J. P."A clinicopathological review of 33 patients with vulvar melanoma identifies c-KIT as a prognostic marker". International Journal of Molecular Medicine 33, no. 4 (2014): 784-794. https://doi.org/10.3892/ijmm.2014.1659