J.Jpn. Surg. Soc.. 88(10): 1452-1456, 1987

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Original article

ANGIOGRAPHIC DIAGNOSIS OF VENOUS INVASION WITH REFERENCE TO LIVER METASTASIS OF CARCINOMA OF THE COLON

Angiography using Prostaglandin E₁ was performed on thirty one cases with carcinoma of the colon in order to define the degree of venous invasion. Venous findings (occlusion and/or encasement) were classified into three groups :
AG-V2, above mentioned venous findings up to marginal vein ;
AG-V1, these findings up to the vein of vasa recta ;
AG-V0, no distinct findings on the vein.
1) When angiographic findings were compared to histological findings of subserosal venous invasion, the results of AG-V2, AG-V1 and AG-V0 showed a positive correlation of 91.7%, 46.2% and 16.7%, respectively.
2) The angiographic findings were also correlated with the degree of fibrosis around carcinoma ofthe colon.
3) The incidence rate of liver metastasis in a group of AG-V2 was 50%. In AG-V1 it was 30.8% andin AG-V0 0%.
4) In the course of the postoperative follow-up, liver metastasis appeared in 2 cases of AG-V2 and AG-V1, respectively. The finding may suggest the existence of the liver metastases at the time of operation.

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