Microscopic findings of the intracystic papillary adenoma. The submitted specimen consisted of several fragments of the cystic wall and a separately submitted small papillary mass. The small papillary mass was lined with single-layered cuboidal to columnar epithelial cells on the surface, while the myxoid stroma contained multiple microcystic to tubular glandular structures. The lining epithelial cells have minimal cytologic atypia and inconspicuous mitotic activity (H&E stain, ×100).
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