Merkel cell polyomavirus infection in both components of a combined Merkel cell carcinoma and basal cell carcinoma with ductal differentiation; each component had a similar but different novel Merkel cell polyomavirus large T antigen truncating mutation
Keywords: Merkel cell polyomavirus (MCPyV); Combined tumor; Merkel cell carcinoma (MCC); Basal cell carcinoma (BCC) with ductal differentiation