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Erschienen in: Annals of Surgical Oncology 8/2010

01.08.2010 | Melanomas

Sentinel Node Positive Melanoma Patients: Prediction and Prognostic Significance of Nonsentinel Node Metastases and Development of a Survival Tree Model

verfasst von: Martin Wiener, MBChB, Katharine M. Acland, MRCP, Helen M. Shaw, PhD, Seng-Jaw Soong, PhD, Hui-Yi Lin, PhD, Dung-Tsa Chen, PhD, Richard A. Scolyer, MD, Julie B. Winstanley, PhD, CStat, John F. Thompson, MD

Erschienen in: Annals of Surgical Oncology | Ausgabe 8/2010

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Abstract

Background

Completion lymph node dissection (CLND) following positive sentinel node biopsy (SNB) for melanoma detects additional nonsentinel node (NSN) metastases in approximately 20% of cases. This study aimed to establish whether NSN status can be predicted, to determine its effect on survival, and to develop survival tree models for the sentinel node (SN) positive population.

Materials and Methods

Sydney Melanoma Unit (SMU) patients with at least 1 positive SN, meeting inclusion criteria and treated between October 1992 and June 2005, were identified from the Unit database. Survival characteristics, potential predictors of survival, and NSN status were assessed using the Kaplan–Meier method, Cox regression model, and logistic regression analyses, respectively. Classification tree analysis was performed to identify groups with distinctly different survival characteristics.

Results

A total of 323 SN-positive melanoma patients met the inclusion criteria. On multivariate analysis, age, gender, primary tumor thickness, mitotic rate, number of positive NSNs, or total number of positive nodes were statistically significant predictors of survival. NSN metastasis, found at CLND in 19% of patients, was only predicted to a statistically significant degree by ulceration. Multivariate analyses demonstrated that survival was more closely related to number of positive NSNs than total number of positive nodes. Classification tree analysis revealed 4 prognostically distinct survival groups.

Conclusions

Patients with NSN metastases could not be reliably identified prior to CLND. Prognosis following CLND was more closely related to number of positive NSNs than total number of positive nodes. Classification tree analysis defined distinctly different survival groups more accurately than use of single-factor analysis.
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Metadaten
Titel
Sentinel Node Positive Melanoma Patients: Prediction and Prognostic Significance of Nonsentinel Node Metastases and Development of a Survival Tree Model
verfasst von
Martin Wiener, MBChB
Katharine M. Acland, MRCP
Helen M. Shaw, PhD
Seng-Jaw Soong, PhD
Hui-Yi Lin, PhD
Dung-Tsa Chen, PhD
Richard A. Scolyer, MD
Julie B. Winstanley, PhD, CStat
John F. Thompson, MD
Publikationsdatum
01.08.2010
Verlag
Springer-Verlag
Erschienen in
Annals of Surgical Oncology / Ausgabe 8/2010
Print ISSN: 1068-9265
Elektronische ISSN: 1534-4681
DOI
https://doi.org/10.1245/s10434-010-1049-5

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Appendizitis BDC Leitlinien Webinare
CME: 2 Punkte

Inhalte des Webinars zur S1-Leitlinie „Empfehlungen zur Therapie der akuten Appendizitis bei Erwachsenen“ sind die Darstellung des Projektes und des Erstellungswegs zur S1-Leitlinie, die Erläuterung der klinischen Relevanz der Klassifikation EAES 2015, die wissenschaftliche Begründung der wichtigsten Empfehlungen und die Darstellung stadiengerechter Therapieoptionen.

Dr. med. Mihailo Andric
Berufsverband der Deutschen Chirurgie e.V.