{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,13]],"date-time":"2025-05-13T22:10:33Z","timestamp":1747174233173,"version":"3.40.5"},"reference-count":26,"publisher":"Hogrefe Publishing Group","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Vasa"],"published-print":{"date-parts":[[2023,7]]},"abstract":"<jats:p> Summary: Background: The marginal vein (MV) is a persisting embryonic vein located at the lateral aspect of the lower limb. The Weber-classification, which was developed on the basis of phlebography in the 1990s, is the only existing classification system for this rare disease. Aim of this study was the structured characterization of the lateral marginal vein (MV) using magnetic resonance imaging (MRI) and evaluation of the applicability of the Weber-classification. Patients and methods: Institutional Review Board approval was obtained for this retrospective, single-center study. All patients who underwent contrast-enhanced MRI (using a prospectively determined protocol) of the untreated MV were included. MV anatomy and associated findings were characterized in a structured way taking into account the criteria of the Weber-classification for MV: inflow, outflow and extension. If three criteria of the Weber-classification were fulfilled the MV was categorized as \u201cclassifiable according to Weber\u201d. The MV was categorized as \u201cpartially classifiable according to Weber\u201d, if two criteria were met and as \u201cnot classifiable according to Weber\u201d if less than two criteria were applicable. Results: 56 imaging studies of 58 MV (7 thoracoabdominal, 51 lower extremities) were reviewed. 18\/51 MV of the lower extremities were \u201cclassifiable\u201d according to the Weber-classification. 33\/51 lower extremity MV were not definitely categorized according to the Weber-classification: 19\/51 MV were \u201cpartially classifiable\u201d and 14\/51 MV were \u201cnot classifiable\u201d. 30\/51 MV presented with hypoplastic, 1\/51 with aplastic deep venous system. 34\/51 lower extremity and 6\/7 thoracoabdominal MV were associated with an additional vascular malformation (VM). Conclusions: MRI is suitable for detailed anatomic characterization of the MV and reveals additional therapy relevant findings like associated VM. The Weber-classification was not applicable in most cases, reflecting its limits and the heterogeneity of this rare disease. Structured reports rather than an obsolete classification system should be preferred for MRI of the MV. <\/jats:p>","DOI":"10.1024\/0301-1526\/a001070","type":"journal-article","created":{"date-parts":[[2023,4,21]],"date-time":"2023-04-21T06:55:35Z","timestamp":1682060135000},"page":"264-274","source":"Crossref","is-referenced-by-count":1,"title":["Structured magnetic resonance imaging-based characterization of the \t\t\t\t\tmarginal vein reveals limits of the Weber-classification"],"prefix":"10.1024","volume":"52","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2326-9734","authenticated-orcid":true,"given":"Simone","family":"Hammer","sequence":"first","affiliation":[{"name":"Department of Radiology, Medical Center University of \t\t\t\t\tRegensburg, Faculty of Medicine, University Hospital Regensburg, \t\t\t\t\t\tGermany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2423-981X","authenticated-orcid":true,"given":"Natascha Platz Batista","family":"da Silva","sequence":"additional","affiliation":[{"name":"Department of Radiology, Medical Center University of \t\t\t\t\tRegensburg, Faculty of Medicine, University Hospital Regensburg, \t\t\t\t\t\tGermany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Johanna","family":"M\u00fcller","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, Hospital Barmherzige \t\t\t\t\tBr\u00fcder, Regensburg, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Claudia","family":"Fellner","sequence":"additional","affiliation":[{"name":"Department of Radiology, Medical Center University of \t\t\t\t\tRegensburg, Faculty of Medicine, University Hospital Regensburg, \t\t\t\t\t\tGermany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Barbara","family":"Greiner","sequence":"additional","affiliation":[{"name":"Department of Radiology, Medical Center University of \t\t\t\t\tRegensburg, Faculty of Medicine, University Hospital Regensburg, \t\t\t\t\t\tGermany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Veronika","family":"Ingrid Huf","sequence":"additional","affiliation":[{"name":"Department of Radiology, Medical Center University of \t\t\t\t\tRegensburg, Faculty of Medicine, University Hospital Regensburg, \t\t\t\t\t\tGermany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christian","family":"Stroszczynski","sequence":"additional","affiliation":[{"name":"Department of Radiology, Medical Center University of \t\t\t\t\tRegensburg, Faculty of Medicine, University Hospital Regensburg, \t\t\t\t\t\tGermany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Walter Alexander","family":"Wohlgemuth","sequence":"additional","affiliation":[{"name":"Department of Radiology, Medical Center University of \t\t\t\t\tHalle (Saale), Faculty of Medicine, University of Halle (Saale), \t\t\t\t\t\tGermany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6756-9005","authenticated-orcid":true,"given":"Wibke","family":"Uller","sequence":"additional","affiliation":[{"name":"Department of Diagnostic and Interventional \t\t\t\t\tRadiology, Medical Center University of Freiburg, Faculty of Medicine, \t\t\t\t\tUniversity of Freiburg, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"101","reference":[{"key":"c1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejvs.2006.06.025"},{"key":"c2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jtcvs.2010.04.023"},{"key":"c3","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvsv.2018.01.015"},{"key":"c4","doi-asserted-by":"publisher","DOI":"10.1016\/0720-048X(94)90340-9"},{"volume-title":"Angeborene Gef\u00e4\u00dfmi\u00dfbildungen: R\u00f6ntgenanatomie von trunkul\u00e4ren Gef\u00e4\u00dffehlern und Achsenanomalien","year":"1997","author":"Loose DA","key":"c5"},{"key":"c6","doi-asserted-by":"publisher","DOI":"10.1177\/1358863X13498463"},{"key":"c7","doi-asserted-by":"publisher","DOI":"10.1097\/00000658-198503000-00020"},{"key":"c8","volume-title":"Vascular birthmarks: Hemangiomas and malformations","author":"Mulliken JB","year":"1988","edition":"1"},{"key":"c9","unstructured":"International Society for the Study of Vascular \t\t\t\t\t\tAnomalies. 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