Gallbladder, Epithelium - Hyperplasia
comment:Figure 1 and Figure 2 are from a partially collapsed normal gallbladder. Note the thickness of the muscular wall. Gallbladder hyperplasia varies from a few cells on papillary folds to generalized papillary projections involving most of the mucosa ( Figure 3 and Figure 4 , arrows). Hyaline droplets may be present in the lining epithelium.
recommendation:Mucosal or epithelial hyperplasia of the gallbladder is uncommon in NTP studies and should be recorded whenever present and given a severity grade. Severe associated lesions such as inflammation or hyaline droplet accumulation should be diagnosed separately. The pathology narrative should define any unusual features of the case(s) being diagnosed.
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Web page last updated on: June 23, 2014