Adenoma
| Definition: |
A benign epithelial tumor with a glandular organization. |
| Notes: |
GEN or unspecified; prefer specifics; coord IM with precoord organ/neopl term (IM) |
| Also Called: |
Adenoma, Basal Cell,Adenoma, Follicular,Adenoma, Microcystic,Adenoma, Monomorphic,Adenoma, Papillary,Adenoma, Trabecular |
Adenoma Categories.
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Adenoma, Adrenal Cortical - A benign neoplasm of adrenal cortical cells resembling normal adrenal cells histologically but possessing functional autonomy. In general it does not exceed 5 cm in its largest dimension, although benign tumors exceeding 20 cm have been reported. Adrenal cortical adenomas produce hypercortisolism and hyperaldosteronism, but seldom produce adrenogenital syndromes. For the most part the prognosis after surgery is reasonably favorable. (From DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1286) |
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Adenoma, Bile Duct - A benign tumor of the intrahepatic bile ducts. |
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Adenoma, Islet Cell - A benign tumor of the pancreatic ISLET CELLS. Usually it involves the INSULIN-producing PANCREATIC BETA CELLS, as in INSULINOMA, resulting in HYPERINSULINISM. |
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Adenoma, Liver Cell - A benign epithelial tumor of the LIVER. |
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Adenoma, Oxyphilic - A usually benign glandular tumor composed of oxyphil cells, large cells with small irregular nuclei and dense acidophilic granules due to the presence of abundant MITOCHONDRIA. Oxyphil cells, also known as oncocytes, are found in oncocytomas of the kidney, salivary glands, and endocrine glands. In the thyroid gland, oxyphil cells are known as Hurthle cells and Askenazy cells. |
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Adenoma, Sweat Gland - A benign neoplasm derived from epithelial cells of sweat glands. (Stedman, 25th ed) |
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Adenoma, Villous - An adenoma of the large intestine. It is usually a solitary, sessile, often large, tumor of colonic mucosa composed of mucinous epithelium covering delicate vascular projections. Hypersecretion and malignant changes occur frequently. (Stedman, 25th ed) |
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Adenomatoid Tumor - A small, circumscribed, benign tumor of the genital tract, composed of small glandlike spaces lined by flattened or cuboidal mesothelium-like cells. (From Dorland, 27th ed) |
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Adenomatosis, Pulmonary - A neoplastic disease in which the alveoli and distal bronchi are filled with mucus and mucus-secreting columnar epithelial cells. It is characterized by abundant, extremely tenacious sputum, chills, fever, cough, dyspnea, and pleuritic pain. (Stedman, 25th ed) |
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Adenomatous Polyps - Benign neoplasms derived from glandular epithelium. (From Stedman, 25th ed) |
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Cystadenoma - A benign neoplasm derived from glandular epithelium, in which cystic accumulations of retained secretions are formed. In some instances, considerable portions of the neoplasm, or even the entire mass, may be cystic. (Stedman, 25th ed) |
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Mesothelioma - A tumor derived from mesothelial tissue (peritoneum, pleura, pericardium). It appears as broad sheets of cells, with some regions containing spindle-shaped, sarcoma-like cells and other regions showing adenomatous patterns. Pleural mesotheliomas have been linked to exposure to asbestos. (Dorland, 27th ed) |
Adenoma Definitions and Terms
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