ABSTRACT
BACKGROUND: Stent-graft placement is generally used to treat pseudoaneurysm (PSA) of the axillary artery (AA) trunk to maintain the patency of peripheral vessels. Coil embolization of a PSA associated with a disrupted AA trunk has rarely been reported. CASE PRESENTATION: A 54-year-old woman presented with swelling of her right shoulder. She had had a right proximal humeral fracture 12 years earlier. Contrast-enhanced computed tomography (CECT) and subsequent angiograms revealed a giant PSA at the disrupted, distal right AA. There were collateral flows to the brachial artery from the proximal to the right AA. To preserve collateral flows to the brachial artery, selective embolization of the inflow artery that derived from the distal AA was performed with hydrogel-coated coils. The post-embolization arteriogram showed no flow into the PSA, but collateral flows to the brachial artery we preserved. The post-embolization course was uneventful. The patient regained warmth in her right arm and hand on post-embolization day 4. Repeat CECT on post-embolization day 9 confirmed blood-flow to her right radial artery. CONCLUSIONS: While a stent-graft should be used if the AA trunk can be preserved, coil embolization should be considered for PSA if the AA trunk is disrupted but collaterals are preserved.
ABSTRACT
PURPOSE: This study aimed to evaluate the technical and clinical success rates of transcatheter arterial embolization (TAE) for subcapsular hematoma of the liver. METHODS: Between January 2010 and March 2022, 34 patients underwent TAE for subcapsular hematomas of the liver. The causes of subcapsular hematoma were liver tumor rupture (n = 12), trauma (n = 12), iatrogenic complications (n = 9), and spontaneous bleeding (n = 1). The technical and clinical success rates of TAE, blood test results after TAE and additional treatments were evaluated. The patients were divided into either with or without retrograde segmental or lobar portal venous flow on angiography. Technical and clinical success rates and blood test results after TAE were compared between the two groups. RESULTS: Technical and clinical success rates were 94.1% and 73.5%, respectively. Six patients died within one month of TAE. A repeat TAE was performed in three patients. Surgical removal and hemostasis for subcapsular hematoma were done in four patients. One patient had liver failure. The retrograde portal venous flow was observed in 18 patients. The difference in technical and clinical success rates and blood test results after TAE between the two groups was statistically insignificant. CONCLUSION: TAE is an effective and safe treatment for subcapsular hematomas of the liver. The success rates of TAE and liver damage due to TAE did not differ between patients with and without retrograde portal venous flow.
