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Pseudoinvasion with high-grade dysplasia in a colonic adenoma. Distinction from adenocarcinoma
R R Pascal1, G Hertzler, S Hunter
1Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia 30322.
The American Journal of Surgical Pathology
|July 1, 1990
Abstract:
High-grade dysplasia was found to extend to an area of pseudoinvasion in the submucosa of a colonic adenoma mimicking invasive carcinoma. The presence of both benign and cytologically malignant epithelium and residual foci of lamina propria among the submucosal glands distinguishes this entity from adenocarcinoma arising in an adenomatous polyp.