1. Quantitative measurement of melanoma spread in sentinel lymph nodes and survival.
- Author
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Anja Ulmer, Klaus Dietz, Isabelle Hodak, Bernhard Polzer, Sebastian Scheitler, Murat Yildiz, Zbigniew Czyz, Petra Lehnert, Tanja Fehm, Christian Hafner, Stefan Schanz, Martin Röcken, Claus Garbe, Helmut Breuninger, Gerhard Fierlbeck, and Christoph A Klein
- Subjects
Medicine - Abstract
BACKGROUND: Sentinel lymph node spread is a crucial factor in melanoma outcome. We aimed to define the impact of minimal cancer spread and of increasing numbers of disseminated cancer cells on melanoma-specific survival. METHODS AND FINDINGS: We analyzed 1,834 sentinel nodes from 1,027 patients with ultrasound node-negative melanoma who underwent sentinel node biopsy between February 8, 2000, and June 19, 2008, by histopathology including immunohistochemistry and quantitative immunocytology. For immunocytology we recorded the number of disseminated cancer cells (DCCs) per million lymph node cells (DCC density [DCCD]) after disaggregation and immunostaining for the melanocytic marker gp100. None of the control lymph nodes from non-melanoma patients (n = 52) harbored gp100-positive cells. We analyzed gp100-positive cells from melanoma patients by comparative genomic hybridization and found, in 45 of 46 patients tested, gp100-positive cells displaying genomic alterations. At a median follow-up of 49 mo (range 3-123 mo), 138 patients (13.4%) had died from melanoma. Increased DCCD was associated with increased risk for death due to melanoma (univariable analysis; p
- Published
- 2014
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