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The Collaborative International Dictionary
Adenoma

Adenoma \Ad`e*no"ma\, n.; L. pl. -mata. [NL.; adeno- + -oma.] (Med.) A benign tumor of a glandlike structure; morbid enlargement of a gland. -- Ad`e*nom"a*tous, a.

Wiktionary
adenoma

n. (context pathology English) A benign tumour of the epithelium arising from or resembling a gland.

WordNet
adenoma
  1. n. a benign epithelial tumor of glandular origin

  2. [also: adenomata (pl)]

Wikipedia
Adenoma

An adenoma (from Greek αδένας, adeno-, "gland" + -ώμα, -oma, "tumor") (; plural adenomas or adenomata ) is a benign tumor of epithelial tissue with glandular origin, glandular characteristics, or both. Adenomas can grow from many glandular organs, including the adrenal glands, pituitary gland, thyroid, prostate, and others. Some adenomas grow from epithelial tissue in nonglandular areas but express glandular tissue structure (as can happen in familial polyposis coli). Although adenomas are benign, over time they may transform to become malignant, at which point they are called adenocarcinomas. Most adenomas do not transform. But even while benign, they have the potential to cause serious health complications by compressing other structures ( mass effect) and by producing large amounts of hormones in an unregulated, non-feedback-dependent manner (causing paraneoplastic syndromes). Some adenomas are too small to be seen macroscopically but can still cause clinical symptoms.

Usage examples of "adenoma".

There was really no indication of a micro adenoma from those numbers, she said, not enough to even warrant doing an MRI, although, again, I could talk over treatment with my doctor.

Gelatinous or interacinous adenoma, which consists in an enlargement of the acini by an accumulation of colloid material, and an increase in the interacinous tissue by a growth of round cells.

Linsmayer reported a case in which there was a softened adenoma in the pituitary body, and the thymus was absent.

One had a pituitary adenoma and the other had spinal cord degeneration.

I've got Donald Anderson who they thought had pancreatic cancer but who ended up with a benign adenoma.