Bilateral micronodular hyperplasia is more common than unilateral adrenal adenoma. Primary hyperparathyroidism may be cured by removing the adenoma or overactive parathyroid glands. Primary hyperparathyroidism is most commonly due to solitary parathyroid adenoma. Lithium-associated hyperparathyroidism is usually caused by a single parathyroid adenoma. An ACTH-secreting corticotrophic pituitary adenoma should be removed after diagnosis. AIP is labeled as a tumor suppressor gene and a pituitary adenoma disposition gene. Such damage may occur with large pituitary tumors, such as pituitary adenoma. It is impossible to distinguish between follicular adenoma and carcinoma on cytological grounds. Imaging to detect an Adrenocortical adenoma may also be considered. A less common cause is a pituitary adenoma. M8453/0 Intraductal papillary-mucinous adenoma (C25. In 1924, the Soviet neurologist Nikolai Itsenko reported two patients with pituitary adenoma. A single case report has linked oligodendroglioma to irradiation of pituitary adenoma. Other gastrointestinal causes include pancreatic fistulae and the presence of adenoma. In people with a single benign tumor (adenoma), surgical removal (adrenalectomy) may be curative.