SCC typically stains positive for CK, P40, and P63, while adenocarcinoma exhibits positivity for CK, CK7, thyroid transcription factor 1, and napsin A. Myxoma tumour cells express calretinin, and markers such as actin, CD31, S-100, and vimentin are variably expressed (10). The gene discussed is CALB2; the disease is myxoma.