myoepithelial cells

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myoepithelial cells

[‚mī·ō‚ep·ə′thē·lē·əl ‚sel]
(histology)
Contractile epithelial cells resembling smooth muscle cells that are present in glands, notably the mammary gland, and aid in secretion.
References in periodicals archive ?
Transmission electron micrograph of section same as above showing electron dense secretory granules (SG) and myoepithelial cell (MEC) during the development of the parotid gland.
Keywords: Encapsulated papillary carcinoma, Myoepithelial cells, Prognosis, Immunohistochemistry.
For the first time, in this study, 1 week of episodic binge drinking in female rats has been connected with damage to the submandibular and parotid glands showing a reduction in myoepithelial cells, cytokeratin expression in parenchyma, and higher levels of lipid peroxidation.
Key words: bitch, mammary gland, myoepithelial cells, carcinomas in mixed and complex tumours.
A, Myoepithelioma exhibits nests of myoepithelial cells in a chondromyxoid stroma.
The tubules are lined by cuboidal or low columnar cells with round uniform nuclei resting on a myoepithelial cell layer.
16,17) Some authors have also included tumors that have a myxoid stroma, given the evidence for the formation of a myxoid matrix by the myoepithelial cells of pleomorphic adenoma.
Tumors of myoepithelial cell origin are made up entirely or predominantly of myoepithelial cells.
Most breast cancers and other breast tumors have an epithelial cell origin, with stromal and myoepithelial cell tumors being less common.
The cytologic features of apocrine cells can be worrisome and, if associated with a reduction or loss in the myoepithelial cell layer, may prompt an erroneous diagnosis of malignancy.
Under low-power examination, a prominent myoepithelial cell (MEC) layer can be seen at the periphery of the ducts.
A benign intraductal papillary lesion is characterized by the presence of a layer of intervening myoepithelial cells in the fibrovascular fronds, whereas its malignant counterpart lacks an intact myoepithelial cell layer within the papillae.