Morphometric study of megaureter / 대한비뇨기과학회지

ABSTRACT

There are different patterns of muscular response according to the type of megaureter. These patterns can be used in determining the cause of the wide ureters. We studied 20 dilated ureters quantitatively and quantitatively by standard pathologic techniques using the average size and population of muscle cells in the dilated ureter as the quantitative index of workload or obstruction. In the obstructed type. the smooth muscle in the wall of the proximal dilated ureter was hypertrophic and hyperplastic. In contrast. in the refluxing type. there was neither hypertrophy nor hyperplasic of muscle in the wall of the proximal dilated ureter. By this morphometric study of muscle cells, it can be possible to identify the megaureters which are caused by obstruction not only in the excised specimen but also by a frozen section biopsy specimen.