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Thyroid follicular adenoma ranges in diameter from 3 cm on an average, but sometimes is larger (up to 10 cm) or smaller. The typical thyroid adenoma is solitary, spherical and encapsulated lesion that is well demarcated from the surrounding parenchyma. The color ranges from gray-white to red-brown, depending upon the cellularity of the adenoma
Hürthle cell neoplasms can be separated into Hürthle cell adenomas (benign tumours) and carcinomas (malignant tumours) [5] arising from the follicular epithelium of the thyroid gland. [6] The latter is a relatively rare form of differentiated thyroid cancer, accounting for only 3-10% of all differentiated thyroid cancers, [ 7 ] and was ...
Hyalinizing trabecular tumor (d–f) is composed of trabeculae of elongated or polygonal cells admixed with abundant amounts of hyaline material negative for amyloid and positive for type IV collagen (f); Ki-67 is characteristically expressed in the cell membrane but not in the nuclei of the tumor cells (e). Follicular adenoma with signet ring ...
The location and size of the tumor may cause pressure and pain to the patient. But often the tumor goes undetected. After detection, the mass is tested using an invasive fine-needle aspiration biopsy. [5] Hürthle cell adenoma is the benign analogue of Hürthle cell carcinoma. This adenoma is extremely rare; when it occurs, it usually occurs in ...
Follicular thyroid cancer accounts for 15% of thyroid cancer and occurs more commonly in women over 50 years of age. Thyroglobulin (Tg) can be used as a tumor marker for well-differentiated follicular thyroid cancer. Thyroid follicular cells are the thyroid cells responsible for the production and secretion of thyroid hormones.
The lymph node affected is usually the same side as that of the location of the tumor. Blood spread is also possible in thyroid cancers, especially in follicular and anaplastic carcinoma. The tumor emboli do angioinvasion of lungs; end of long bones, skull, and vertebrae are affected. Pulsating metastases occur because of their increased ...
An salivary gland oncocytoma (also known as an oxyphilic adenoma) is a well-circumscribed, benign neoplastic growth comprising about one percent of all salivary gland tumors. The histopathology is marked by sheets of large, swollen polyhedral epithelial oncocytes, which are granular acidophilic parotid cells with centrally located nuclei.
Hurthle cell carcinoma, a variant of follicular thyroid carcinoma. Oncocytoma, a tumour composed of oncocytes, may be found as a less common salivary gland neoplasm also known as oxyphilic adenoma. Renal oncocytoma, a kidney tumour composed of oncocytes.