Effects of Different Organ Metastases on the Prognosis of Stage IV Urothelial Carcinoma of the Bladder

Table 2

Frequencies of combination distant metastasis among 3103 patients with stage IV UBUC (n, %).

Site of distant metastasis	N	N%
None of distant metastasis	2068	66.6
One site
Bone	345	11.1
Brain	14	0.5
Liver	119	3.8
Lung	253	8.2
Two sites
Bone + brain	9	0.3
Bone + liver	57	1.8
Bone + lung	93	3.0
Brain + liver	1	0.0
Brain + lung	10	0.3
Liver + lung	72	2.3
Three sites
Bone + brain + liver	2	0.1
Bone + brain + lung	3	0.1
Bone + liver + lung	44	1.4
Brain + liver + lung	4	0.1
Four sites
Bone + brain + liver + lung	9	0.3

UBUC, urinary bladder urothelial carcinoma.