Fig. 4
From: A primary hepatic gastrinoma accompanied by hyperplasia of multi-nodular Brunner’s glands
Histopathological examinations. a Hematoxylin and eosin staining of the liver mass showing a funicular, solid, and tubular increase of small cube-shaped, atypical cells (×200 magnification). b Immunostaining for chromogranin A of the liver mass was positive (×200 magnification). c Immunostaining for gastrin in the liver mass was positive (×200 magnification). d Hematoxylin and eosin staining of the duodenum showing hyperplasia of the Brunner’s glands (×200 magnification). e Immunostaining for chromogranin A in the duodenum was negative (×100 magnification). f Immunostaining for gastrin in the duodenum showing a small gathering of gastrin-positive cells (×200 magnification)