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Objective: To study digital subtraction angiography ( DSA ) of hepatic arterial anatomy of the liver cancer patients and variability classification and incidence , and the literatures explore its clinical significance . Methods: A retrospective analysis of 500 cases of hepatocellular carcinoma in patients with hepatic arterial DSA data , observe the origin of the hepatic artery , take the line situation , Michels I type outside the hepatic artery normalized variation of hepatic artery and typing statistics the incidence of various types of variation , the group results Michels autopsy and domestic DSA cases contrast, analysis of various types of variation and its distribution characteristics , and summarized directly involved in tumor blood supply variation artery origin of the distribution and the corresponding treatment . Results: 500 patients with HCC , Michels' type I ( common ) hepatic arterial anatomy of 413 cases , accounting for 82.6% . Variation of hepatic artery 87 cases of 17.4% , belongs to Michles genotyping of 60 example , 12 per cent , Michels Ⅱ type 2 ( 0.4 % ) % , Michels ' Ⅲ type 43 ( 8.6 % ) % , the Michels' Ⅴ Type 3 cases of ( 0.6 % ) , Michels' type VI 1 ( 0.2 % ) , the Michels' IX 11 cases ( 2.2%) , no Michels' type IV Michels type VII , Michels type VIII and Michels Ⅹ type . Does not belong to other types of variation of Michles typing in 27 cases, accounting for 5.4% . This group of patients with typing cases Michels autopsy group and 2 DSA cases mutation rate and distribution of consistency and poor . 87 cases of hepatic artery variation cases , 58 cases of variant hepatic artery directly involved in the blood supply to the tumor , 58 cases of the variation of the right hepatic artery in 53 cases, the variation of the left hepatic artery in 5 cases , 20 cases of TACE treatment , cases a liver transplant . Conclusion : The hepatic artery anatomic variations complexity and diversity , there is a certain randomness , Michels sub -type can not be comprehensive overview the hepatic artery typing , understand the variability of the hepatic artery and the correct classification of clinical surgery and liver cancer interventional treatment of important guiding significance .
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