Mieke Bus

74 Chapter 5 Figure 2: Maximal deflection of the ureterorenoscope is diminished when an OCT probe is inserted. The Karl Storz Flex-Xc ureterorenoscope is able to deflect 270 degrees. After insertion the OCT probe (right picture) the maximal deflection of the Karl Storz Flex-Xc is diminished to 250 degrees. However, this did not limit any of the OCT measurements. Histopathological resection specimen analysis Final pathologic examination after nephroureterectomy or segmental ureter resection showed in ten patients low-grade UTUC, in fourteen patients high-grade UTUC, in two patients isolated CIS whereas five patients had concomitant CIS. Fourteen patients had non-invasive UTUC and twelve patients had invasive UTUC (Table 2). Biopsy analysis In twenty-four patients biopsies were obtained during diagnostic URS (Table 2, Figure 3).