High magnification micrograph of an atrial myxoma. H&E stain. | Features: Hypocellular myxoid polypoid mass with cells that are: Perivascular arrangement, Finely vacuolated eosinophilic cytoplasm, Polygonal/elongated cell shape, Mononuclear or multinucleated. May contain macrophages, other inflammatory cells. May be covered with endothelium. | Nephron – CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=8023916

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