lymphoepithelioma /lym·pho·epi·the·li·o·ma/ (lim″fo-ep″ĭ-thēl″e-o´mah) a pleomorphic, poorly differentiated carcinoma arising from modified epithelium overlying lymphoid tissue of the nasopharynx.
lymphoepithelioma
lymphoepithelioma (lim´fōep´i-thē´lēō´m
),
lymphoepithelioma
lym·pho·ep·i·the·li·o·ma (l m f - p -th l- m)n. A poorly differentiated squamous cell carcinoma involving lymphoid tissue in the region of the tonsils and the nasopharynx. |
lymphoepithelioma
[lim′fō·ep′ithē′lē·ō′mə]
Etymology: L, lympha + Gk, epi, above, thele, nipple, oma, tumor
a poorly differentiated neoplasm developing from the epithelium overlying lymphoid tissue in the nasopharynx. It occurs most frequently in young people of Asian origin. Also called lymphoepithelial carcinoma.
lymphoepithelioma (lim´fōep´i-thē´lēō´m
),n a malignant neoplasm arising from the epithelium and lymphoid tissue of the nasopharynx and characterized by cells of both tissues; may occur in the palate.
lymphoepithelioma
Undifferentiated nasopharyngeal carcinoma A CA with a marked lymphocytic component Types–Schmincke type Diffuse mixing of epithelial and lymphoid elements, making the lesion difficult to distinguish from lymphoma,
since the epithelial cells may mimic lymphoblasts or the lacunar cell variants of Reed-Sternberg cells Regaud type Cohesive carcinoma cell aggregates that are large enough to make the epithelial nature of the tumor obvious
Diagnosis Immunoperoxidase stains for cytokeratin
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