myoepithelium


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myoepithelium

 [mi″o-ep″ĭ-the´le-um]
tissue made up of contractile epithelial cells. adj., adj myoepithe´lial.

my·o·ep·i·the·li·um

(mī'ō-ep'i-thē'lē-ŭm),
Spindle-shaped, contractile, smooth musclelike cells of epithelial origin that are arranged longitudinally or obliquely around sweat glands and the secretory alveoli of the mammary gland; stellate myoepithelial cells occur around lacrimal and some salivary gland secretory units.
Synonym(s): muscle epithelium
[myo- + epithelium]

myoepithelium

/myo·epi·the·li·um/ (-ep″ĭ-the´le-um) tissue made up of contractile epithelial cells.myoepithe´lial

my·o·ep·i·the·li·um

(mī'ō-ep-i-thē'lē-ŭm)
Spindle-shaped, contractile, smooth musclelike cells of epithelial origin that are arranged longitudinally or obliquely around sweat glands and the secretory alveoli of the mammary gland; stellate myoepithelial cells occur around lacrimal and some salivary gland secretory units.

myoepithelium

tissue made up of contractile epithelial cells.
References in periodicals archive ?
2-13) However, recent publications have shown that most either completely lack myoepithelium, both within papillae and at the periphery or, less frequently, have very sparse myoepithelium at the periphery only.
2,13) Figure 5, A and B, highlights a case of encapsulated papillary carcinoma with lack of myoepithelium.
sup][4] This helps in differential diagnosis with malignant diseases which were positive for c-erbB-2, p53, and lack of complete myoepithelium.
Loss of myoepithelium is variable in solid papillary carcinoma of the breast.
Some of the bacteriocytes, however, are epithelially organized and contribute to the myoepithelium of the dorsal blood vessel, especially in areas where the vessel is open and blood flows freely between lacunae and blood vessel.
31) This notion has been challenged by others who propose that the tumor represents an indolent form of invasive carcinoma with an expansile growth pattern, as the absence of peripheral myoepithelium argues against the current concept of an in situ carcinoma.
WT1 expression in salivary gland pleomorphic adenomas: a reliable marker of the neoplastic myoepithelium.
The benign nature of these problematic biopsy specimens, however, is readily appreciated by demonstrating the abundance of myoepithelium with special stains (actin, p63, calponin--whichever you happen to prefer).
As the menstrual cycle progresses, the myoepithelium becomes more apparent and acquires vacuolated cytoplasm.
Calponin has been shown to be a sensitive marker of myoepithelial differentiation in various morphologic types of neoplastic myoepithelium and in numerous benign and malignant salivary gland tumors.
Expression of smooth muscle-specific proteins in myoepithelium and stromal fibroblasts of normal and malignant human breast tissue.
S-100 protein antibodies do not label normal salivary gland myoepithelium.