{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,7]],"date-time":"2026-11-07T03:32:21Z","timestamp":1794022341140,"version":"4.8.0"},"reference-count":9,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,5]]},"abstract":"<jats:p>Inferior vena cava atresia (IVCA) is a rare vascular condition that may be treated by venous stenting. The authors report on the microsurgical removal of an intraspinally misplaced stent causing nerve root compression and neurological deficits.<\/jats:p><jats:p>A 42-year-old patient with IVCA and painful cutaneous collaterals had been scheduled for treatment by stenting of the iliocaval confluence and associated venous collaterals. Initial stenting of the right iliac vein was successful; however, during recanalization of the left paravertebral plexus, the stent entered the spinal canal via extraspinal-to-intraspinal venous collaterals. Because of the use of monoplanar angiography, the stent misplacement was not seen during the procedure. Postinterventionally, the patient experienced a foot elevation weakness (grade 1\/5) as well as pain and hypesthesia corresponding to the L5 dermatome. Ultrasonography ruled out a lumbosacral plexus hematoma. CT angiography showed that a stent had entered the spinal canal through the left S1 neuroforamen causing nerve root compression. The intraspinal portion of the stent was removed piecemeal via a left-sided hemilaminectomy. Venous bleeding due to the patient\u2019s anticoagulation therapy, the stent\u2019s sharp mesh wire architecture, and the proximity to nerve roots complicated the surgery. Postoperatively, the foot elevation improved to grade 4\/5.<\/jats:p>","DOI":"10.3171\/2019.11.spine191220","type":"journal-article","created":{"date-parts":[[2020,1,17]],"date-time":"2020-01-17T23:02:30Z","timestamp":1579302150000},"page":"763-767","source":"Crossref","is-referenced-by-count":1,"title":["Microsurgical removal of a misplaced intraspinal venous stent in a patient with inferior vena cava atresia"],"prefix":"10.3171","volume":"32","author":[{"given":"Christoph","family":"Schwartz","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Hospital, University of Helsinki, Finland;"},{"name":"Department of Neurosurgery, University Hospital Salzburg, Paracelsus Medical University Salzburg, Austria; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ahmad","family":"Hafez","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Hospital, University of Helsinki, Finland;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kimmo","family":"L\u00f6nnrot","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Hospital, University of Helsinki, Finland;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Behnam","family":"Rezai Jahromi","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Hospital, University of Helsinki, Finland;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kimmo","family":"Lappalainen","sequence":"additional","affiliation":[{"name":"Department of Radiology, HUS Medical Imaging Center, Helsinki University Hospital, University of Helsinki, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin","family":"Lehecka","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Hospital, University of Helsinki, Finland;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jari","family":"Siironen","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Hospital, University of Helsinki, Finland;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mika","family":"Niemel\u00e4","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Hospital, University of Helsinki, Finland;"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1","series-title":"Clin Radiol","doi-asserted-by":"publisher","first-page":"612.e1","DOI":"10.1016\/j.crad.2017.02.020","article-title":"Effectiveness of biplane angiography compared to monoplane angiography for vascular neuro-interventions: a systematic review of the literature","volume":"72","author":"Bellemare CA","year":"2017","unstructured":"Bellemare CA, Poder TG: Effectiveness of biplane angiography compared to monoplane angiography for vascular neuro-interventions: a systematic review of the literature. 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