{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T12:53:00Z","timestamp":1788871980178,"version":"build-2803163510"},"reference-count":32,"publisher":"SAGE Publications","issue":"6","license":[{"start":{"date-parts":[[2004,11,1]],"date-time":"2004-11-01T00:00:00Z","timestamp":1099267200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Vet Pathol"],"published-print":{"date-parts":[[2004,11]]},"abstract":"<jats:p> Schistosome infections in mammals cause chronic proliferative vascular lesions associated with the presence of adult parasites in the lumen of mesenteric and portal veins. In birds, however, this has never been reported. In this study, we found obliterative endophlebitis associated with the presence of adult schistosomes ( Trichobilharzia sp., probably Trichobilharzia filiformis) as the main pathologic finding in five of eight mute swans ( Cygnus olor). On histologic examination, the intestinal and portal veins of these swans showed moderate to severe, diffuse, hyperplastic endophlebitis, characterized by myointimal hyperplasia, often with obliteration of the vascular lumen. In addition, moderate to severe lymphocytic and granulocytic enteritis occurred in all eight swans associated with the presence of schistosome eggs in the intestinal mucosa. Other findings included hepatic and splenic hemosiderosis and high hepatic copper levels. The vascular lesions associated with Trichobilharzia sp. infection may have contributed to the emaciation and death of those mute swans by obstruction of venous return in the intestinal and portal veins. <\/jats:p>","DOI":"10.1354\/vp.41-6-658","type":"journal-article","created":{"date-parts":[[2004,11,19]],"date-time":"2004-11-19T19:18:09Z","timestamp":1100891889000},"page":"658-665","source":"Crossref","is-referenced-by-count":22,"title":["Obliterative Endophlebitis in Mute Swans (<i>Cygnus olor<\/i>) Caused by <i>Trichobilharzia<\/i> sp. (Digenea: Schistosomatidae) Infection"],"prefix":"10.1177","volume":"41","author":[{"given":"G. H.","family":"van Bolhuis","sequence":"first","affiliation":[{"name":"Dutch Wildlife Health Center, Department of Virology, Erasmus Medical Center, Rotterdam, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. M.","family":"Rijks","sequence":"additional","affiliation":[{"name":"Dutch Wildlife Health Center, Department of Virology, Erasmus Medical Center, Rotterdam, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"G. M.","family":"Dorrestein","sequence":"additional","affiliation":[{"name":"Department of Veterinary Pathobiology, Utrecht University, Utrecht, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J.","family":"Rudolfova","sequence":"additional","affiliation":[{"name":"Department of Parasitology, Charles University, Prague, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M.","family":"van Dijk","sequence":"additional","affiliation":[{"name":"Bird and Hedgehog Sanctuary \u2018de Mikke,\u2019 Middelburg, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"T.","family":"Kuiken","sequence":"additional","affiliation":[{"name":"Dutch Wildlife Health Center, Department of Virology, Erasmus Medical Center, Rotterdam, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2004,11,1]]},"reference":[{"key":"bibr1-vp.41-6-658","unstructured":"1 Beerda DS, Kanaal door Walcheren: Actualisatieonderzoek waterbodem. 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