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Blood supply of tumor in IV segment of liver: DSA analysis

Objective: To study the hepatic arterial blood supply to hepatic tumor in segment Ⅳ.Methods: The data of CT and DSA images of 10 cases with hepatic tumors in segment Ⅳ were retrospectively reviewed.The location of tumor was diagnosed on CT.The hepatic arterial supply of tumors in segment Ⅳ was surveyed on DSA,while the branches of hepatic artery were observed at different levels.For analyzing the origin of blood supply of hepatic tumor,the number of branches reaching to tumor tissue was accounted.Scoring method was employed to quantify the blood supply of tumor on the basis of tissue staining.Results: Several branches reached to the tumor in segment Ⅳ,including superior and inferior branches of RAHA,RPHA,MHA,LMHA and LLHA,right and left caudate hepatic artery,and cystic artery.The number of those branches supplying the tumors were 7,7,5,2,4,6,7,0,0,5,2 and 1 respectively(χ2=10.087,P=0.343,Chi-square test),while the scores of them were 15,15,8,3,5,8,10,0,0,5,2 and 1 respectively(χ2=37.406,P=0.000,Kendall's W).RAHA and LMHA were the main supply arteries,with the scores of 30 and 18(Z=-1.335,P=0.182,Wilcoxon) seperately.The total scores of RHA and LHA system were 52 and 20(Z=-2.199,P=0.028,Wilcoxon).Conclusions: Either RHA or LHA system has the possibility to supply the tumors in segment Ⅳ of liver.RAHA and LMHA are the main arteries supplying to the tumor.