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24.10.2017 | Melanomas | Ausgabe 1/2018

Annals of Surgical Oncology 1/2018

Prediction of Non-sentinel Node Status in Patients with Melanoma and Positive Sentinel Node Biopsy: An Italian Melanoma Intergroup (IMI) Study

Zeitschrift:
Annals of Surgical Oncology > Ausgabe 1/2018
Autoren:
MD Carlo Riccardo Rossi, MD Simone Mocellin, MD Luca Giovanni Campana, MD Lorenzo Borgognoni, MD Serena Sestini, MD Giuseppe Giudice, MD Corrado Caracò, MD Adriana Cordova, MD Nicola Solari, MD Dario Piazzalunga, MD Paolo Carcoforo, MD Pietro Quaglino, MD Virginia Caliendo, MD Simone Ribero, on behalf of the Italian Melanoma Intergroup (IMI)
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1245/​s10434-017-6143-5) contains supplementary material, which is available to authorized users.

Abstract

Background and Purpose

Approximately 20% of melanoma patients harbor metastases in non-sentinel nodes (NSNs) after a positive sentinel node biopsy (SNB), and recent evidence questions the therapeutic benefit of completion lymph node dissection (CLND). We built a nomogram for prediction of NSN status in melanoma patients with positive SNB.

Methods

Data on anthropometric and clinicopathological features of patients with cutaneous melanoma who underwent CLND after a positive SNB were collected from nine Italian centers. Multivariate logistic regression was utilized to identify predictors of NSN status in a training set, while model efficiency was validated in a validation set.

Results

Data were available for 1220 patients treated from 2000 through 2016. In the training set (n = 810), the risk of NSN involvement was higher when (1) the primary melanoma is thicker or (2) sited in the trunk/head and neck; (3) fewer nodes are excised and (4) more nodes are involved; and (5) the lymph node metastasis is larger or (6) is deeply located. The model showed high discrimination (area under the receiver operating characteristic curve 0.74, 95% confidence interval [CI] 0.70–0.79) and calibration (Brier score 0.16, 95% CI 0.15–0.17) performance in the validation set (n = 410). The nomogram including these six clinicopathological variables performed significantly better than five other previously published models in terms of both discrimination and calibration.

Conclusions

Our nomogram could be useful for follow-up personalization in clinical practice, and for patient risk stratification while conducting clinical trials or analyzing their results.

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Zusatzmaterial
Supplementary material 1 (JPEG 46 kb)
10434_2017_6143_MOESM1_ESM.jpg
Supplementary material 2 (JPEG 31 kb)
10434_2017_6143_MOESM2_ESM.jpg
Supplementary material 3 (DOC 20 kb)
10434_2017_6143_MOESM3_ESM.doc
Literatur
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