Evaluation of extrahepatic collateral arteries in XXXX in three independent groups in a single center.

@entity1 @entity157 @entity7244 @entity5
UNASSIGNED: To improve the efficacy of transcatheter arterial chemoembolization (TACE) for @entity157 ( @entity157 ), this study evaluated the prevalence and causes of extrahepatic arteries (EHAs) and identified feeding arteries in HCCs in three independent clinical groups in a single inverventional radiology center. Between November 2011 and September 2012, 942 cases of @entity157 were included in this retrospective study. The @entity1 were treated in three independent groups of 285, 301 and 356 @entity1 , respectively. Enhanced computed tomography, enhanced magnetic resonance imaging and digital subtraction angiography were reviewed retrospectively and correlations between the presence of @entity5 -feeding EHAs and @entity5 number, size and location in the liver, number of repeat TACE procedures and complications were assessed. There were 698 EHAs in the 942 cases of @entity157 , with 182, 233 and 283 EHAs in the three independent groups, respectively. @entity5 size was associated with EHA formation; the percentages of @entity1 with EHAs were 2.7  3.0, 5.5  0.5, 43.2  4.0, 61.8  5.2 and 93.4  1.8% with @entity5 sizes of 2-3, 3-5, 5-7, 7-9 and >9 cm, respectively. There were 159  19 EHAs in each group feeding @entity5 in peripheral locations in the liver, but only 48.7  6.8 in the central zone. The most common EHA was the @entity7244 , with a mean of 101.0  14.1 per group. The number of EHAs increased proportionally with the number of TACE sessions. The number of EHAs was positively associated with @entity5 size, peripheral location of the @entity5 and number of TACE sessions.
