Abstract
Transcatheter arterial chemoembolization (TACE) is now accepted as an effective palliative therapy for unresectable hepatocellular carcinoma (HCC). However, as noted in previous studies, this malignancy often parasitizes collateral vessels. This is of particular concern during repeat chemoembolization procedures. Other identified sources of collateral blood supply to HCC which have been described include the internal mammary arteries, omental branches usually from the gastroepiploic or the dorsal pancreatic artery, inferior phrenic artery, cystic artery, right renal capsular artery and the intercostal arteries. We report a case of exophytic HCC supplied by the ileocolic division of the superior mesenteric artery (SMA). To our knowledge, having reviewed the literature, this represents the first case of parasitization of this vessel.
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