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The practical limitations of catheters used for infusion were studied by their types in 47 patients with hepatocellular carcinoma who were treated by Segmental Lp-TAE. For catheterization into the arterial branches of S5 and S8, a coaxial infusion catheter was helpful. However, a coaxial infusion catheter was seldom used for catheterization into the arterial branches of S6 and S7. For infusion into vessels having diameters of less than 1.9 mm at the tip end of the catheter, positive use of a coaxial infusion catheter is strongly recommendable. A Tracker-18 catheter was especially helpful for catheterization into the vessels of S5.

The evaluation of TAE was studied for 73 patients with metastatic liver cancers but without metastasis in other organs, who were treated with initial TAE more than 2 years ago. Seventeen patients survived for more than 2 years. The primary lesions consisted of colon cancer in 9 patients, the Langerhans islet cell tumor of the pancreas in 4, gastric cancers in 2, breast cancer in 1 and leiomyosarcoma of the colon in 1. The overall 2-year survival rate calculated by the direct method was 23.3% and mean survival period was 15.8 months. The prognosis was good in H1 and V3. Lp-TAE produced better effects but no statistically significant difference was found between the 2-year survivals by Lp-TAE and by GS-TAE.

The patients with gallbladder cancer often accompany with chronic cholecystitis. This fact leads angiographic diagnosis difficult. So the angiographic findings of the chronic cholecystitis are first analyzed precisely and subtracting the angiographic findings of the gallbladder cancer from these gives us the pure (true) angiographic findings of the gallbladder cancer. Characteristic angiographic findings of the gallbladder cancer only are stretched cystic artery encasement (27/37 cases) and short straight tumor vessels "bristly vessel" (36/37 cases).