follicular adenoma

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Related to follicular adenoma: follicular carcinoma

fol·lic·u·lar ad·e·no·ma

an adenoma of the thyroid with a simple glandular pattern.
Farlex Partner Medical Dictionary © Farlex 2012


(ad?e-no'ma) ('ma-ta) plural.adenomasplural.adenomata [ aden- + -oma]
A benign tumor made of epithelial cells, usually arranged like a gland. adenomatous (-no'ma-tus), adjective

Patient care

Initial care focuses on identifying the sites of tumors, performing biopsies or noninvasive studies to determine if they are benign or malignant, and discussing findings with the patient, the patient's family, and significant others. Disease-specific education is provided to explain diagnostic options and support the patient. Malignant adenomata may need surgical removal; they may be treated with a combination of therapies, including surgical removal, radiation therapy, hormone therapy or chemotherapy. Patient education, esp. with respect to the side effects of therapies and implementing strategies to ameliorate the side effects, is crucial. General emotional support of the patient eases anxiety, isolation, and suffering.

acidophilic adenoma

An adenoma of the pituitary gland in which cells stain with acid dyes. Such staining was formerly used to suggest the presence of growth hormones, the cause of acromegaly and gigantism. Immunocytochemistry is the modern means of classifying pituitary tumors.
Synonym: eosinophil adenoma; somatotroph adenoma

adrenocorticotrophin-secreting adenoma

A pituitary adenoma that secretes adrenocorticotropic hormone, the releasing hormone responsible for Cushing's syndrome.

basophil adenoma

, basophilic a.
An adenoma of the pituitary gland in which cells stain with basic dyes. The term was formerly used to suggest tumors that secreted adrenocorticotrophin (ACTH), the cause of Cushing syndrome. Those tumors are now identified more directly by the identification (by immunocytochemistry) of ACTH in tumor cells. The use of hematoxylin and eosin staining to identify pituitary tumors is obsolete.

chromophobe adenoma

An adenoma of the pituitary gland composed of cells that do not stain readily. The term has more historical value than descriptive value and is no longer in use.

cystic adenoma


eosinophil adenoma

, eosinophilic a.Acidophil adenoma.

fibroid adenoma


follicular adenoma

An adenoma of the thyroid.

gonadotroph-cell adenoma

The most common macroadenoma of the pituitary gland. It secretes either luteinizing hormone or follicle-stimulating hormone.

Hürthle cell adenoma

See: Hürthle, Karl W.

lactotroph adenoma


malignant adenoma


papillary adenoma

An adenoma with nipple-shaped glands.

pituitary adenoma

An adenoma of the pituitary gland, often of one of its functional cell types. It may produce excessive amounts of hormones such as prolactin, growth hormone, or adrenocorticotrophic hormone, or it may be clinically silent.

prolactin-secreting adenoma


sebaceous adenoma

Enlarged sebaceous glands, esp. of the face.
Synonym: adenoma sebaceum

adenoma sebaceum

Sebaceous adenoma.

somatotroph adenoma

A growth-hormone-secreting tumor of the anterior pituitary that causes acromegaly or giantism.

villous adenoma

A large polyp of the mucosal surface of the large intestine. It has the potential to develop into cancer.
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
The most common benign thyroid lesion in our study is colloid goitre [42 (70%) cases], second highest cases were of thyroiditis [7 (11.6%) cases], followed by follicular adenoma [3 (5%) cases].
Follicular adenomas are well-encapsulated thyroid neoplasms which do not show the typical invasiveness of follicular carcinoma, nor abnormal nuclear features of papillary carcinomas [7].
of Percentage Cases of Cases (%) Non-neoplastic Simple colloid goitre 39 69.64% Multinodular goitre 9 16.07% Hashimoto's thyroiditis 7 12.5% Granulomatous thyroiditis 1 1.78% Neoplastic Follicular adenoma 8 50% Papillary carcinoma 4 25% Follicular carcinoma 3 18.75% Medullary carcinoma 1 6.25% Table 7.
Most of the euthyroid patients had follicular adenoma (table 3).
Figure 3: HPE Reports Follicular Adenoma 24 Adenomatous Goiter 62 Papillary Carcinoma 4 Follicular Carcinoma 2 Anaplastic Carcinoma 2 Lymphocytic Thyroiditis 4 Simple Cyst 2 Note: Table made from bar graph.
Among the thyroid masses, colloid goitre, thyroiditis and follicular adenoma were more common in females and young adults whereas thyroid carcinoma was more common in males.
Follicular neoplasms (FTC and follicular adenoma [FA]) showed no TROP2 expression.
Pathology had revealed nodular hyperplasia in the fight lobe of the thyroid, and follicular adenoma with areas of severe acute and chronic inflammation and foci of abscesses in the left lobe.
Diagnostic dilemma may arise when an encapsulated nodule with follicular pattern exhibits clear nuclei with grooves or darkly staining colloid, and distinguishing follicular adenoma from follicular variant of papillary carcinoma becomes difficult.
One of these, known as the encapsulated follicular variant, (2) is particularly treacherous because its follicular architecture and well-differentiated nature results in a marked similarity with a follicular adenoma when it is encapsulated and with a hyperplastic nodule when it is not.
Among the 12, final surgical pathology eventually revealed that nine patients had a follicular adenoma, two had nodular hyperplasia, and one had multinodular goiter.
Some published reports have shown the mean AgNOR scores in follicular adenomas as 3.513 & 1.79.14 In follicular carcinomas, the mean score has been found as 4.2 & 5.1314 Present study has shown the mean AgNOR score in follicular adenoma as 1.914 and in follicular carcinoma as 5.03.

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