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Cardiac myxoma with glandular differentiation: An immunohistochemical and ultrastructural study

Ultrastructural Pathology, ISSN: 0191-3123, Vol: 37, Issue: 1, Page: 77-82
2013
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Article Description

A case of cardiac myxoma with glandular differentiation is reported. The patient did not have elements of the Carney triad or syndrome. The tumor was mainly composed of characteristic stellate cells in a focally collagenized, myxoid stroma, along with aggregates of glandular-forming epithelial cells, with mucin-containing intra- and intercellular lumina. Ultrastructurally, these gland spaces displayed short, straight microvilli and junctional complexes. The epithelial cells were positive for cytokeratin 7 and negative for cytokeratin 20. Calretinin was positive in the stellate cells and negative in the epithelial component. The potential origin from pluripotent mesenchymal cells or from seeded stem cells is hypothesized for glandular differentiation in myxomas. Further studies are required to unravel the relationship between stellate cells and the diverse heterologous components reported in these tumors. © 2013 Informa Healthcare USA, Inc.

Bibliographic Details

Lloreta, Josep; Juanpere, Núria; Riverola, Anna; Dallari, Daniel; Cañas, Maria Angels; Pijuan, Lara; Baró, Teresa; García, Pilar; Serrano, Sergi

Informa UK Limited

Biochemistry, Genetics and Molecular Biology; Medicine

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