myoepithelioma

myoepithelioma

 [mi″o-ep″ĭ-the″le-o´mah]
a benign tumor predominantly composed of myoepithelial cells; a pure myoepithelial neoplasm is rare.

my·o·ep·i·the·li·o·ma

(mī'ō-ep'i-thē'lē-ō'mă),
A benign tumor of myoepithelial cells.
[myo- + epithelium, + G. -ōma, tumor]

my·o·ep·i·the·li·o·ma

(mī'ō-ep'i-thē-lē-ō'mă)
A benign tumor of myoepithelial cells.
[myo- + epithelium, + G. -ōma, tumor]
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References in periodicals archive ?
The myoepithelial cells in mixed tumor (and in myoepithelioma, which is likely on a spectrum with mixed tumor) usually coexpress S100 protein and cytokeratin (and/or EMA).
(1,4) MNH has been described in the literature using various nomenclature, including clear cell hidradenocarcinoma, malignant clear cell myoepithelioma, malignant clear cell hidradenoma, clear cell eccrine carcinoma, and malignant clear cell acrospiroma.
Acrospiroma are also termed as clear cell, nodular, superficial and solid-cystic hidradenoma, clear cell myoepithelioma, porosyringoma, large sweat gland adenoma or basal cell carcinoma of sweat gland origin.
Other lesions described to show oncocytes include both benign and malignant tumours like oncocytic/oncocytoid variants of cystadenoma, myoepithelioma, acinic cell carcinoma, salivary duct carcinoma, and metastatic renal cell carcinoma [2].
Radiological assessment was consistent with either a myoepithelioma, a pleomorphic adenoma, or a low-grade mucoepidermoid tumour.
The differential diagnosis includes rhabdomyosarcoma, nodular fasciitis, paraganglioma, granular cell tumor, myoepithelioma, ectomesenchymal chondromyxoid tumor, and aural polyp.
This tumor's differential diagnoses include adenomyoepithelioma, phyllodes tumor, adenoleiomyoma, fibroadenoma with prominent smooth muscle, fibromatosis, benign spindle cell tumor of the breast, fibrous histiocytoma, myoid hamartoma, myoepithelioma, fibromato-sis-like low-grade metaplastic carcinoma and leiomyosarcoma of the breast (9).
Malignant myoepithelioma of the breast: A case report and review of the literature.
Histological examination showed the following: 5 cases of malignant peripheral nerve sheath tumor, 4 cases of undifferentiated pleomorphic sarcoma, 3 cases of osteosarcoma and chondrosarcoma, 2 cases of chordoma, giant cell tumors of bone, and leiomyosarcoma, and 1 case each of malignant solitary fibrous tumor, malignant myoepithelioma, plasmacytoma, malignant lymphoma, histiocytic sarcoma, and hemangiopericytoma.
Type of benign tumor were; pleomorphic adenoma, monomorphic adenoma, warthin tumor, myoepithelioma and hemangioma.