PURPOSE: To retrospectively evaluate the vascular anatomy of the internal mammary arteries that @entity157 ( @entity157 ), with an emphasis on number of @entity5 feeders. MATERIALS AND METHODS: This retrospective study was approved by the institutional review board; informed consent was waived. Between August 1996 and July 2005, internal mammary arteries that supply @entity157 were found in 97 (2.2%) of 4438 @entity1 (76 @entity1 , 21 @entity1 ; mean age, 55 years +/- 10.5 [standard deviation]; range, 19-79 years). Computed tomographic scans and digital subtraction angiograms in these 97 @entity1 were retrospectively reviewed in consensus by two interventional radiologists. @entity5 size, number of @entity5 feeders, and @entity5 location were recorded. The t test and analysis of variance were used to correlate @entity5 size with number of @entity5 feeders, @entity5 feeder laterality, and transcatheter arterial chemoembolization (TACE) time. RESULTS: The following 125 @entity5 feeders were identified in 97 @entity1 : phrenic branch (n = 59), @entity432 (n = 40), superior epigastric artery (n = 15), anterior intercostal artery (n = 6), ensiform artery (n = 4), and @entity432 (n = 1). In two @entity1 , @entity5 were in dorsal hepatic areas directly beneath the diaphragm. @entity5 located in liver segments II or III were supplied by the right internal mammary artery. In three @entity1 , the @entity5 feeders from the left internal mammary artery crossed the midline. @entity5 size was not statistically associated with number of @entity5 feeders (P = .076), @entity5 feeder laterality (P = .141), and TACE time (P = .729). CONCLUSION: The common @entity5 feeders of the internal mammary artery are the phrenic branch and the @entity432 . Moreover, the internal mammary artery can supply a @entity5 even in the dorsal hepatic area.

Internal mammary arteries supplying @entity157 : vascular anatomy at digital subtraction angiography in 97 XXXX .

@entity5 :: ('MESH:D009369', 'Disease') :: ['tumor', 'Half of the tumors', 'Tumor', 'tumors'] @entity157 :: ('MESH:D006528', 'Disease') :: ['supply hepatocellular carcinomas', 'HCCs'] @entity1 :: ('9606', 'Species') :: ['women', 'patients', 'men'] @entity432 :: ('MESH:D001157', 'Disease') :: ['musculophrenic artery', 'pericardiacophrenic artery']
@entity1 :: (9606,Species) :: ['patients']
