1994 Volume 36 Issue 11 Pages 2136-2145
[Introduction] Using color doppler endoscopic ultrasonography (CDEUS), blood flow of 30 patients with rectal cancer was visualized and measured from May 1992 to January 1994. The patients were classified into the group with distant metastasis (metastasis group n=8) and the group without distant metastasis (control group n=22) . Association of maximum blood flow velocity, the number of observed blood flow and the density of observed blood flow of patients with distant metastasis and venous invasion were studied. [Results] (1) Number and density of blood flow in metastasis group were more than those in control group (p < 0.01, p < 0.05), and maximum blood flow velocity of metastasis group was faster than that of control group (p lt; 0.01). (2) More number of blood flow and faster maximum blood flow velocity were observed in patients with higher venous invasion. (3) In cases of the marked venous invasion (v2, v3), the number of blood flow of metastasis group was higher than that of control group (p < 0.05), and the maximum blood flow velocity of metastasis group was faster than that of control group (p < 0.01) . [Conclusion] Color doppler endoscopic ultrasonography for rectal cancer is useful to estimate the risk of distant metastasis.
