Fig. 4
From: Follicular cholangitis mimicking a common bile duct cancer: a case report
Microscopic findings (hematoxylin & eosin). A The bile duct lesion exhibits dense fibrosis under the mucosal layer and severe inflammation of the peribiliary glands. B Marked lymphoplasmacytic cells invasion (arrowheads) is observed under the dense fibrosis. c Lymphoplasmacytic cells formed numerous lymphoid follicles (arrowheads) containing germinal centers