Abstract
60 cases of gastric dysplasia (20 mild, 20 moderate and 20 severe) were quantitatively studied and compared with cases of hyperplastic polyp (No 10), intestinal metaplasia (No 20), peptic ulcer (No 10) and invasive adenocarcinoma (No 20). In each case the area, the perimeter and the integrated optical density of 100 nuclei were measured in Feulgen stained tissue sections by means of a Leitz TAS. The stepwise discriminant analysis demonstrates that severe dysplasia and adenocarcinoma can be well distinguished from mild and moderate dysplasia. The ploidy pattern study demonstrates that the presence of severe dysplastic changes corresponds to a sharp increase in the degree of aneuploidy. In peptic ulcer, intermediate values between "benign" and "malignant" lesions were found.
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