Monarch Disease Ontology id MONDO_0003429 (functioning pituitary gland adenoma) is a hormone producing pituitary gland adenoma, associated with a hormonal syndrome. Also known as: endocrine active pituitary adenoma, functioning adenoma of pituitary, functioning adenoma of pituitary gland, functioning adenoma of the pituitary, functioning adenoma of the pituitary gland, functioning pituitary adenoma, functioning pituitary gland adenoma (benign), secreting pituitary adenoma.