Carcinoma In Situ Is Significantly Underdetected by Prenephroureterectomy Ureteroscopy in the Management of Upper Tract Urothelial Cancers

Table 2

Histopathological outcomes of patients with prenephroureterectomy ureteroscopic biopsies.

Characteristics		Prenephroureterectomy biopsy histology; numbers (%age)	Nephroureterectomy histology; numbers (%age)
Grade	G1	16 (17.3%)	30 (32.6%)
	G2	6 (6.5%)	20 (21.7%)
	G3	47 (51.08%)	42 (45.6%)
Stage	pTa	17 (18.4%)	11 (11.9%)
	pT1	19 (20.6%)	22 (23.9%)
	pT2	4 (4.3%)	39 (42.3%)
	pT3	0	20 (21.7%)
	Not possible	29 (31.5%)	0
Carcinoma in situ	Concomitant CIS	9 (9.7%)	39 (43.3%)
	Primary CIS	1 (1.08%)	0
Inconclusive	Insufficient material	20 (21.7%)	0
	Other reasons	3 (3.2%)	0

Column contains final results including the inconclusive ureteroscopic biopsies.