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Search: Organ site Search: Tumor / Syndrome
WHO Classification of Tumours
Adenoma, NOS


A non-invasice, benign neoplasm arising from the epithelium. It may be encapsulated or non-encapsulated. The neoplastic epithelial cells may or may not display moderate cellular atypia or dysplasia.
Representative examples are pituitary gland adenoma, follicular adenoma of the thyroid gland, and adenomas (or adenomatous polyps) of the gastrointestinal tract.