Comparison of hydrocolonic sonograpy accuracy in preoperative staging between colon and rectal cancer

Table 1 Characteristics of the patients (n = 30)

	Colon cancer (n = 17)	Rectal cancer (n = 13)	P value
Sex			NS
Male	9	7
Female	8	6
Age			NS
Median (range)	52 (37-68)	56 (43-75)
Size			NS
Mean (range)	5.76 (3-9)	5.8 (3-9)
Time intervals to operation day			NS
Median (range)	4 (3-7)	5 (3-9)
Failure to passage of colonoscopy	7	1	NS
Shape			NS
Polypoid	4	3
Ulcerative	2	2
Ulcerofungating	4	4
Ulceroinfiltrative	7	4
Site
Rectum	-	13
Sigmoid colon	4	-
Descending colon	1	-
Transverse colon	6	-
Ascending colon	6	-

(P = 0.05, Mann-Whitney test), NS: no significance.