Monarch Disease Ontology entry MONDO_0006402 (salivary gland basal cell adenocarcinoma) is a rare adenocarcinoma of the major and minor salivary glands, originating from basaloid, myoepithelial and ductal cells. While morphologically resembling basal cell carcinomas, it is a distinct entity. The tumor is not encapsulated, may invade locally, and less frequently may metastasize. It usually occurs in older patients. Also known as: basal cell adenocarcinoma, basal cell adenocarcinoma of salivary gland, basal cell adenocarcinoma of the salivary gland, saliva-secreting gland skin basal cell carcinoma, skin basal cell carcinoma of saliva-secreting gland.