A morphometric assessment of transitional mucosa in the colon

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Abstract
Quantitative morphometric analysis was used in 10 resection specimens to assess so-called transitional mucosa immediately adjacent to colorectal carcinoma. Eleven nuclear and cellular variables were measured from the malignant epithelial area and from zones of increasing distance (1 cm) from the lesion. In addition, mean mucosal height was assessed for each zone. Morphometrical differences between the mucosa immediately adjacent to the malignant epithelium and that taken at some distance from it were determined by Mann-Whitney U tests. Transitional mucosa showed increased mucosal height but no nuclear differences from normal mucosa. Other work has shown that there are nuclear morphometric differences associated with premalignant conditions in the colon. Thus, the suggestion that transitional mucosa represents early neoplastic change cannot be supported.