Case 15-2 . The submucosa is heavily infiltrated by pleomorphic epithelial cells. Case 15-2 . 2x obj Case 15-3 . Hyperplastic zone is 3-4x as thick as adjacent normal mucosa.
Some crypts are cystic.
There ae both submucosal and subserosal lymphoid follicles. Case 15-3 . Mucosal glands are occasionally cystic and diffusely hyperplastic, but uniform and well oriented to their basement membrane. Hyperplasia, adenomatous, focally extensive, with multifocal lymphoplasmacytic gastritis. Severe focal to coalescing necrosis is associated with inflammatory cell infiltration and syncytial giant cells.