The Natural History and Outcomes of the Patients with Carcinosarcoma Involving Kidney and Renal Pelvis

Table 1

Demographic and clinical characteristics of 43 patients with carcinosarcoma of kidney and renal pelvis (CSKP).

Characteristics	Group	𝑁 (%)	Kidney (𝑛=23)	Renal Pelvis (𝑛=20)	𝑃
Age mean (SD)			70±11	71±13
Age	<75	27 (62.8%)	14	13	0.78
	≥75	16 (37.2%)	9	7
Gender	Male	19 (44.2%)	11	8	0.16
	Female	24 (55.8%)	12	12
Ethnicity	White	38 (88.4%)	19	19	0.22
	Nonwhite	5 (11.6%)	4	1
Married	No	22 (51.2%)	13	9	0.45
	Yes	21 (48.8%)	10	11
Grade	Low grade	1 (2.3%)	0	1	0.02
	High grade	22 (51.2%)	8	14
	Unknown	20 (46.5%)	15	5
SEER stage	Localized	7 (16.3%)	3	4	0.02
	Regional	24 (55.8%)	9	15
	Distant	10 (23.3%)	9	1
	Unstaged	2 (4.7%)	2	0
Laterality	Left	23 (53.5%)	15	8	0.10
	Right	20 (46.5%)	8	12
Nephrectomy	Yes	32 (74.4%)	14	18	0.05
	Unknown surgery	5 (11.6%)	5	0
	No	6 (14%)	4	2
Adjuvant Radiation	Yes	2 (4.7%)	2	0	0.28
	No	41 (95.3%)	21	20
Year of diagnosis	1973–1988	7 (16.3%)	6	1	0.07
	1989–2004	36 (83.7%)	17	19

High grade: poorly differentiated or undifferentiated.