| growth hormone-producing adenoma | <tumour> An adenoma that produces the clinical picture of gigantism or acromegaly, although a third of the cells have no granules or are a mixture of acidophils and chromophobes; some tumours may secrete both growth hormone and prolactin; often an acidophil or eosinophil adenoma. (05 Mar 2000) |
|---|---|
| chromophil adenoma | <tumour> Any adenoma composed of cells that stain readily. (05 Mar 2000) |
| chromophobe adenoma | <tumour> A tumour of the adenohypophysis whose cells do not stain with either acid or basic dyes. (05 Mar 2000) |
| chromophobic adenoma | <tumour> A tumour of the adenohypophysis whose cells do not stain with either acid or basic dyes. (05 Mar 2000) |
| microcystic adenoma of pancreas | <radiology> Benign tumour of pancreas, M:F = 1:4, peak age 69 years of age, tiny cysts filled with GLYCOGEN, not mucin, large (ca. 10 cm), innumerable small cysts (1mm - 20mm), central stellate scar with or without calcification, hypervascular, head = body = tail, ** associated with von Hippel-Lindau syndrome, Cf: macrocystic adenoma, alias mucinous cystic neoplasm (12 Dec 1998) |
| microfollicular adenoma | <tumour> A foetal adenoma of the thyroid composed of very small follicles and solid alveolar groups of thyroid epithelial cells. (05 Mar 2000) |
| Pick's tubular adenoma | A neoplasm of the ovary, arising from the ovarian stroma, mimicking to a greater or lesser extent derivatives of the sex cord mesenchyme of the testis, and sometimes causing defeminization and virilization. (12 Dec 1998) |
| monomorphic adenoma | <tumour> A benign ductal neoplasm of the salivary glands, with a uniform epithelial pattern and lacking the chondromyxoid stroma of a pleomorphic adenoma. (05 Mar 2000) |
| colloid adenoma | <tumour> A follicular adenoma of the thyroid, composed of large follicles containing colloid. Synonym: macrofollicular adenoma. (05 Mar 2000) |
| pituitary adenoma | <radiology> Benign, slow-growing, arises from adenohypophysis (anterior lobe), 5-18% of all intracranial neoplasms plain film (unreliable): enlargement of sella and sloping of the sella floor, erosion of the anterior and posterior clinoid, erosion of the dorsum sellae, calcified in less than10%, may present as a mass in the nasopharynx functioning microadenoma, less than10 mm, 20-30% of pituitary adenomas, types: prolactinoma, corticotrophic adenoma, somatotrophic adenoma, nonfunctioning macroadenoma, more than 10 mm, 70-80% of pituitary adenomas (12 Dec 1998) |
| pleomorphic adenoma | A tumour composed of salivary gland epithelium and fibrous tissue with mucoid or cartilaginous areas. Synonym: pleomorphic adenoma. (05 Mar 2000) |
| corticotrophic adenoma | <oncology, tumour> ACTH-secreting tumour, posterior lobe of the pituitary (central location), usually less than 5mm. See: Cushing disease, pituitary adenoma. (12 Dec 1998) |
| polypoid adenoma | A polyp that consists of benign neoplastic tissue derived from glandular epithelium. Synonym: cellular polyp, polypoid adenoma. (05 Mar 2000) |
| prolactin-producing adenoma | <tumour> A pituitary adenoma composed of prolactin-producing cells; it gives rise to symptoms of nonpuerperal amenorrhoea and galactorrhoea (Forbes-Albright syndrome) in women and to impotence in men. Synonym: prolactinoma. (05 Mar 2000) |
| hepatic adenoma | <radiology> Liver cell adenoma (LCA), rare, benign, F more than M, atypical hepatocytes, no bile ducts or Kuppfer cells (unlike FNH), haemorrhage common, NM: cold nodule associated with: oral contraceptives, type 1 glycogen storage disease (von Gierke) (12 Dec 1998) |