Serrated Adenoma of the Gallbladder: A Case Report

Serrated adenoma of the gallbladder (surgical specimen). a: Overview of the papillary polyp (haematoxylin and eosin, section scanned with EPSON Perfection 4990; scale in mm). b: Low-power microscopical view showing the serrated pattern of the adenoma (haematoxylin and eosin, ×4), c, d: Detail showing the unlocked serrated crypts lined with high-grade dysplastic cells (haematoxylin and eosin, ×20).