c-kit positive Cajal cells, which are easily distinguished from the mast cells in the UPJ, were demonstrated in this study.
Although the ultrastructural configurations in the gastrointestinal and neuronal systems have frequently been evaluated via electron microscopic methods, studies about the electron microscopic evaluation of Cajal cells in human UPJs have not been encountered in the literature.
The expression of Cajal cells at the obstruction site of congenital pelviureteric junction obstruction and quantitative image analysis.
C-kit (CD117) positive-stained mast cells (white arrow) and Cajal cell with cytoplasmic extension between muscle fibres from a control patient (black arrow; CD117, 400x).
C-kit positive-stained mast cells (white arrow) and Cajal cell with spindle-like cytoplasmic extension from a control patient (black arrow; CD117, 400x).