Methylation profiling: a diagnostic tool for the diagnosis of Merkel cell carcinoma of the lymph node without detectable skin primary tumor
Merkel cell carcinoma (MCC) is an aggressive tumor mostly related to Merkel cell polyomavirus genomic integration. MCC can present either as a primary cutaneous tumor or as a lymph node metastasis without a primary skin tumor (MCCWOPT). The distinction between MCCWOPT and lymph node metastases of no...
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
10 October 2025
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| In: |
Virchows Archiv
Year: 2025, Volume: 487, Issue: 5, Pages: 1143-1149 |
| ISSN: | 1432-2307 |
| DOI: | 10.1007/s00428-025-04271-7 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/s00428-025-04271-7
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| Author Notes: | Paul-Louis Chantreau, Pierre Sohier, Mahtab Samimi, Matthias Tallegas, Anne Tallet, Serge Guyetant, Benjamin Goeppert, Maysa Al-Hussaini, Ferdinand Toberer, Nathalia Giese, Stéphanie Roessler, Andreas von Deimling, Thibault Kervarrec |
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| 520 | |a Merkel cell carcinoma (MCC) is an aggressive tumor mostly related to Merkel cell polyomavirus genomic integration. MCC can present either as a primary cutaneous tumor or as a lymph node metastasis without a primary skin tumor (MCCWOPT). The distinction between MCCWOPT and lymph node metastases of non-cutaneous neuroendocrine carcinomas remains challenging. The present study aims to determine whether the methylation profile can distinguish MCCWOPT from lymph node metastases of extracutaneous neuroendocrine carcinomas. Methylation profiles of twenty MCCWOPT were compared to 23 cutaneous MCC, 37 small-cell lung carcinomas, 17 and 34 well-differentiated neuroendocrine tumors of the ileum and pancreas. Among the controls, cutaneous MCC cases formed a cluster distinct from other extracutaneous neuroendocrine tumors. MCCWOPT clustered together with cutaneous MCC cases. Methylation profiling represents a promising additional tool for the diagnosis of MCCWOPT. | ||
| 650 | 4 | |a Differential diagnosis | |
| 650 | 4 | |a Lymph nodes | |
| 650 | 4 | |a MCPyV | |
| 650 | 4 | |a Merkel cell carcinoma | |
| 650 | 4 | |a Metastasis | |
| 650 | 4 | |a Methylation profiling | |
| 650 | 4 | |a Neuroendocrine carcinoma | |
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