Hepatic tumors: predisposing factors for complications of transcatheter oily chemoembolization.

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Abstract
To elucidate major complications and their predisposing factors in transcatheter oily chemoembolization (TOCE) for hepatic tumors. In a retrospective study of 351 patients (aged 26-82 years) with hepatic tumors, TOCE was performed 942 times with an emulsion of iodized oil (3-40 mL) and doxorubicin hydrochloride (20-60 mg). In 126 patients, TOCE was followed by absorbable gelatin sponge embolization. Complications were severe postembolization syndrome (n = 53); hepatic insufficiency (n = 20), infarction (n = 1), or abscess (n = 1); intrahepatic biloma formation (n = 3); tumor rupture (n = 3); septicemia (n = 9); coagulopathy (n = 1); gastrointestinal bleeding (n = 10); gallbladder (n = 5) or splenic infarction (n = 4); pulmonary oil embolism (n = 6); and spinal cord injury (n = 1). Important predisposing factors were major portal vein obstruction, compromised hepatic functional reserve, biliary obstruction, previous biliary surgery, excessive amount (> 20 mL) of iodized oil, hepatic arterial occlusion after repeated TOCE, and nonselective embolization. Most patients with major complications after TOCE had preexisting risk factors.

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