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Purpose: To report technical aspects of thrombolysis and thromboaspiration for acute thromboembolic occlusion in the upper extremity. Materials and methods: This study included four consecutive patients with acute thromboembolic occlusion in the upper extremity (right arm, n = 3; left arm n = 1). The mean patient age was 81.3 ± 11.5 years (mean ± standard deviation; range 69-92 years) and all patients had chronic atrial fibrillation. Emergent angiography was performed via the femoral artery. Results: Thromboembolic occlusion was demonstrated in the axillary artery ( n = 2), axillary and radial arteries ( n = 1), and brachial, radial, and ulnar arteries ( n = 1). Endovascular treatment was performed via the unaffected brachial ( n = 3) or radial artery ( n = 1). Thrombolysis was performed for three patients using 360,000-480,000 IU (mean 400,000 ± 69,000 IU) urokinase, including 12-h continuous infusion in one. Thromboaspiration was performed in all four patients using a 6F catheter. Recanalization was achieved in all patients and all arms were salvaged. Perforation of the small branch during guidewire manipulation was successfully managed by placement of a microcoil. Conclusion: The combination of thrombolysis and thromboaspiration is effective for acute thromboembolic occlusion in the upper extremity. [ABSTRACT FROM AUTHOR]

Purpose: To evaluate the arterial blood supply to the caudate lobe of the liver from the proximal branches of the right inferior phrenic artery (RIPA) in patients with recurrent hepatocellular carcinoma after transcatheter arterial chemoembolization (TACE).Materials and Methods: Thirteen patients, including 10 who had a history of TACE of the caudate artery (A1), underwent TACE of the proximal RIPA branches. Iodized oil distribution was evaluated by computed tomography (CT) 1-week after TACE. Angiographic findings were also evaluated.Results: Previously embolized A1 was occluded (n = 15) or attenuated (n = 2). In one of three patients without A1 TACE, A1 was also attenuated. TACE was performed at the first branch of the proximal RIPA (n = 8), the first branch of the anterior branch (n = 6), and the first branch of the posterior branch (n = 1), respectively. Iodized oil was mainly distributed into the dorsal part of the Siegel lobe (SP) (n = 10), the caudate process (n = 1), and both (n = 2). In three of seven patients who had undergone serial RIPA angiography, RIPA parasitization to SP was suspected before A1 TACE.Conclusion: The proximal RIPA branches mainly supply the SP when A1 is attenuated. [ABSTRACT FROM AUTHOR]