The reproducibility of a quantitative grading system of bladder tumours

Abstract
In order to test the reproducibility of a histomorphometrical grading system of bladder tumors, 15 tumors were twice measured independently by 3 pathologists. The data obtained were then analysed and compared with that of histological grading only. The way in which these morphometrical results are presented to the clinician in a computerized report is described. The need for a satisfactory reliable reproducibility test of every histomorphometrical grading system before introduction in diagnostic pathology is discussed.