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Portal Vein Embolization Using a Nitinol Plug (Amplatzer Vascular Plug) in Combination with Histoacryl Glue and Iodinized Oil: Adequate Hypertrophy with a Reduced Risk of Nontarget Embolization

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Abstract

The purpose of this study was to assess whether portal vein embolization (PVE) using a nitinol vascular plug in combination with histoacryl glue and iodinized oil minimizes the risk of nontarget embolization while obtaining good levels of future liver remnant (FLR) hypertrophy. Between November 2005 and August 2008, 16 patients (8 females, 8 males; mean age, 63 ± 3.6 years), each with a small FLR, underwent right ipsilateral transhepatic PVE prior to major hepatectomy. Proximal PVE was initially performed by placement of a nitinol vascular plug, followed by distal embolization using a mixture of histoacryl glue and iodinized oil. Pre- and 6 weeks postprocedural FLR volumes were calculated using computed tomographic imaging. Selection for surgery required an FLR of 0.5% of the patient’s body mass. Clinical course and outcome of surgical resection for all patients were recorded. At surgery, the ease of hepatectomy was subjectively assessed in comparison to previous experience following PVE with alternative embolic agents. PVE was successful in all patients. Mean procedure time was 30.4 ± 2.5 min. Mean absolute increase in FLR volume was 68.9% ± 12.0% (p = 0.00005). There was no evidence of nontarget embolization during the procedure or on subsequent imaging. Nine patients proceeded to extended hepatectomy. Six patients demonstrated disease progression. One patient did not achieve sufficient hypertrophy in relation to body mass to undergo hepatic resection. At surgery, the hepatobiliary surgeons observed less periportal inflammation compared to previous experience with alternative embolic agents, facilitating dissection at extended hepatectomy. In conclusion, ipsilateral transhepatic PVE using a single nitinol plug in combination with histoacryl glue and iodinized oil simplifies the procedure, offering short procedural times with minimal risk of nontarget embolization. Excellent levels of FLR hypertrophy are achieved enabling safe extended hepatectomy.

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Authors and Affiliations

  1. Department of Diagnostic Imaging, Barts and The London NHS Trust, Whitechapel, London, E1 1BB, UK

    Clare L. Bent, Deborah Low, Matthew B. Matson, Ian Renfrew & Tim Fotheringham

  2. Department of Interventional Radiology, University Health Network, Toronto General Hospital, Toronto, ON, Canada

    Clare L. Bent

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  1. Clare L. Bent
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  2. Deborah Low
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  3. Matthew B. Matson
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  4. Ian Renfrew
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  5. Tim Fotheringham
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Correspondence to Clare L. Bent.

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Bent, C.L., Low, D., Matson, M.B. et al. Portal Vein Embolization Using a Nitinol Plug (Amplatzer Vascular Plug) in Combination with Histoacryl Glue and Iodinized Oil: Adequate Hypertrophy with a Reduced Risk of Nontarget Embolization. Cardiovasc Intervent Radiol 32, 471–477 (2009). https://doi.org/10.1007/s00270-009-9515-9

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  • DOI: https://doi.org/10.1007/s00270-009-9515-9

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