Detection of Merkel Cell Polyomavirus and Human Papillomaviruses in Merkel Cell Carcinoma Combined With Squamous Cell Carcinoma in Immunocompetent European Patients

Abstract

The results underline the hypothesis of co-cancerogenesis of 2 oncogenic viruses in nonmelanoma skin cancer. Technical reasons and a low viral copy number of MCPyV hampering immunohistochemical detection may be responsible for the negative results in the literature.