Abstract
The morphometric differences between the urothelial cells (wet-fixed Papanicolaou-stained) in the voided urine of 20 patients with low grade and high grade bladder tumors were measured. The morphometrical data of this learning set resulted in a cytomorphometrical classification rule, which was applied to a test set of 21 cases with low grade and high grade bladder tumors. The results of the cytomorphometrical classification rule correspond very well with the histomorphometrical classification and the histological grade of the parent tumors. It evidently is feasible to classify bladder tumors using the cytomorphometrical data of the exfoliated urothelial cells alone.
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