[Simplified treatment of ureteroceles]. / Traitement simplifié des urétérocèles.

Out of series of 95 ureteroceles in a 15 years period, 17 cases have been treated by simplified method, either endoscopic (7 cases) or polar nephrectomy alone (9 cases). Endoscopic incision alone can be used. In neonates with ureterocele simplex (4 cases cured with no secondary reflux). To assess upper pole function in ureterocele duplex (followed by reconstruction or nephrectomy). To drain some very difficult cases (bilateral, infected). In our experience, the upper heminephrectomy alone as a simplified approach of this pathology has failed in the vast majority of cases, leading to a secondary intervention to cure the intra vesical pathology. It is our opinion that this approach must be restrained to the cases of intra cervical or intra ureteral, the secondary pathology will almost lead to a secondary trans vesical approach with is neither more difficult nor easier that a primary one. Herein is described the present position of the authors concerning rare indication of these simplified approach.

Development of scanning X-ray microscopes for materials science spectromicroscopy at the Advanced Light Source.

The development of two zone-plate microscopes for X-ray spectroscopic analysis of materials is described. This pair of instruments will provide imaging NEXAFS analysis of samples in transmission at atmospheric pressure and imaging XPS and NEXAFS analysis of sample surfaces in a UHV environment.