pituitary gland basophil adenoma (Monarch Disease Ontology identifier MONDO_0006673) is an epithelial neoplasm of the anterior pituitary gland in which the neoplastic cells stain positive with basic dyes. Also known as: basophilic adenoma, basophilic pituitary gland adenoma, mucoid cell adenoma, pituitary basophilic adenoma, pituitary gland basophilic adenoma.