adenoma

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Related to follicular adenoma: follicular carcinoma

adenoma:

see neoplasmneoplasm
or tumor,
tissue composed of cells that grow in an abnormal way. Normal tissue is growth-limited, i.e., cell reproduction is equal to cell death. Feedback controls limit cell division after a certain number of cells have developed, allowing for tissue repair
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adenoma

[‚ad·ən′ō·mə]
(medicine)
A benign tumor of glandular origin and structure.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Table 1: Comparison of result of thyroid test between FNAC and histopathology findings Diagnosis FNAC, n (%) Histodiagnosis, n (%) Benign lesions Colloid goiter 38 (63.3) 42 (70) Benign thyroid cyst 1 (1.6) 1 (1.6) Thyroglossal cyst 2 (3.3) 2 (3.3) Follicular adenoma -- 3 (5.0) Hashimoto's thyroiditis 7 (11.6) 6 (10.0) Lymphocytic thyroiditis 1 (63.3) 1 (1.6) Hyalinising trabecular tumour -- 1 (1.6) Other 2 (3.3) -- Total 51 (85.0) 56 (93.3) Malignant lesions Papillary carcinoma 3 (5.0) 3 (5.0) Anaplastic carcinoma 1 (1.6) 1 (1.6) Other 5 (8.3) -- Total 9 (15.0) 4 (6.6) Table 2: Correlation between cytodiagnosis and histodiagnosis Cytological diagnosis Histological diagnosis No.
TABLE 1: Comparison of mean age and size amongthe 231 thyroid nodules diagnosed as follicular adenoma, follicular carcinoma, and follicular variant of papillary thyroid carcinoma.
However, this is not a good yardstick for FNAC of the thyroid as a large group falls in the category of suspicious or consistent with follicular neoplasm, out of which the majority turn out to be follicular adenomas or hyperplastic/adenomatous nodules.
Follicular adenoma was the most common benign tumour (8 cases - 11.11%) which correlated with studies conducted by Gupta et al [8] (16%), Silverman et al [26] (5.2%) and Sathiyamurthy et al [11] (5.45%), but higher than Handa et al [6] (1.84%).
A subtotoal thyroidectomy was performed because of the compressive symptoms, which indicated a follicular adenoma.
(10,11) Follicular adenoma, on the other hand, is usually a solitary nodule discovered in a euthyroid gland.
The histopathological findings were classified into six groups: Nodular goitre, thyroiditis, benign tumors (follicular adenomas), malignant tumors, Primary thyrotoxicosis, and others.
Among the other 7 patients in the hypothyroid group, 4 (28.6%) had a diagnosis of follicular adenoma, 2 (14.3%) had multinodular goiter, and 1 (7.1%) had diffuse atrophy and scar tissue on the thyroid gland (table 1).
Many neoplasms are considered in the differential diagnosis, but the principal ones are follicular adenoma, follicular carcinoma, and medullary carcinoma; nonneoplastic considerations are diffuse hyperplasia (Graves' disease) and adenomatoid nodules.
Follicular adenoma & thyroid carcinoma are the third most common type (4.2% each).
Immunohistochemical separation of follicular variant of papillary thyroid carcinoma from follicular adenoma. Endocr Pathol.

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