Clinicopathological predictors of recurrence in nodular and superficial spreading cutaneous melanoma: A multivariate analysis of 214 cases

M.A. Pizzichetta, D. Massi, M. Mandalà, P. Queirolo, I. Stanganelli, V. De Giorgi, G. Ghigliotti, S. Cavicchini, P. Quaglino, M.T. Corradin, P. Rubegni, M. Alaibac, S. Astorino, F. Ayala, S. Magi, L. Mazzoni, M.A. Manganoni, R. Talamini, D. Serraino, G. Palmieri

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Abstract

Background: Nodular melanoma (NM) accounts for most thick melanomas and because of their frequent association with ulceration, fast growth rate and high mitotic rate, contribute substantially to melanoma-related mortality. In a multicentric series of 214 primary melanomas including 96 NM and 118 superficial spreading melanoma (SSM), histopathological features were examined with the aim to identify clinicopathological predictors of recurrence. Methods: All consecutive cases of histopathologically diagnosed primary invasive SSM and NM during the period 2005-2010, were retrieved from the 12 participating Italian Melanoma Intergroup (IMI) centers. Each center provided clinico-pathological data such as gender, age at diagnosis, anatomical site, histopathological conventional parameters, date of excision and first melanoma recurrence. Results: Results showed that NM subtype was significantly associated with Breslow thickness (BT) at multivariate analysis: [BT 1.01-2 mm (OR 7.22; 95% CI 2.73-19.05), BT 2.01-4 mm (OR 7.04; 95% CI 2.54-19.56), and BT > 4 mm (OR 51.78; 95% CI 5.65-474.86) (p < 0.0001)]. Furthermore, mitotic rate (MR) was significantly correlated with NM histotype: [(MR 3-5 mitoses/mm2 (OR 2.62; 95% CI 1.01-6.83) and MR > 5 mitoses/mm2 (OR 4.87; 95% CI 1.77-13.40) (p = 0.002)]. The risk of recurrence was not significantly associated with NM histotype while BT [BT 1.01-2.00 mm (HR 1.55; 95% CI 0.51-4.71), BT 2.01-4.00 mm (HR 2.42; 95% CI 0.89-6.54), BT > 4.00 mm. (HR 3.13; 95% CI 0.95-10.28) (p = 0.05)], mitotic rate [MR > 2 mitoses/mm2 (HR 2.34; 95% CI, 1.11-4.97) (p = 0.03)] and the positivity of lymph node sentinel biopsy (SNLB) (HR 2.60; 95% CI 1.19-5.68) (p = 0.007) were significantly associated with an increased risk of recurrence at multivariate analysis. Conclusions: We found that NM subtype was significantly associated with higher BT and MR but it was not a prognostic factor since it did not significantly correlate with melanoma recurrence rate. Conversely, increased BT and MR as well as SNLB positivity were significantly associated with a higher risk of melanoma recurrence. © 2017 The Author(s).
Original languageEnglish
Article number227
Number of pages7
JournalJournal of Translational Medicine
Volume15
Issue number1
DOIs
Publication statusPublished - 2017

Keywords

  • Nodular melanoma
  • Prognostic indicators
  • Recurrence
  • Superficial spreading melanoma
  • adult
  • age
  • aged
  • Article
  • breslow thickness
  • cancer center
  • cancer diagnosis
  • cancer localization
  • cancer recurrence
  • cancer surgery
  • clinical feature
  • controlled study
  • cutaneous melanoma
  • female
  • gender
  • high risk patient
  • histopathology
  • human
  • human tissue
  • major clinical study
  • male
  • mitosis rate
  • multivariate analysis
  • nodular cutaneous melanoma
  • oncological parameters
  • prediction
  • primary tumor
  • recurrence risk
  • sentinel lymph node biopsy
  • sentinel lymph node metastasis
  • skin surgery
  • superficial spreading cutaneous melanoma
  • thickness
  • tumor invasion

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