Figure 6b. Left IPA originating from the proper hepatic artery in a 42-year-old woman with a dysplastic nodule in the right anterior inferior hepatic lobe. (a) Selective common hepatic angiogram shows the left IPA (arrow) originating from the proper hepatic artery and no definitive tumor staining. Note the accessory left gastric artery (arrowhead) arising from the left IPA and the gastric staining (*). 1 = anterior trunk of ascending branch of the left IPA, 2 = posterior trunk of ascending branch of the left IPA. (b) CTHA image obtained for evaluation of the dysplastic nodule shows the left IPA (arrow) and accessory left gastric artery (arrowhead). Note the gastric staining (*).