{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,28]],"date-time":"2025-08-28T00:06:33Z","timestamp":1756339593160,"version":"3.44.0"},"reference-count":26,"publisher":"BMJ","issue":"3","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2024,3,13]]},"published-print":{"date-parts":[[2024,3]]},"abstract":"<jats:p>Here, we report a case of a woman in her 50s who was referred for an incidentally discovered lesion anterior to the origin of inferior vena cava suspicious for a paraganglioma following a CT scan for vaginal bleeding. A follow-up <jats:sup>68<\/jats:sup>Ga-DOTATATE PET-CT and MRI of the abdomen reinforced the radiological impression of an extra-adrenal paraganglioma (EAP). The EAP was deemed non-functional given normal urine biogenic amine, supine plasma fractionated metanephrines and chromogranin A levels. The mass was resected laparoscopically without perioperative blockade. Histological examination revealed a venous malformation. Extrahepatic abdominal venous malformations are rare and can be indistinguishable from an EAP on imaging preoperatively. Although benign, the lesion nevertheless warrants excision as it is associated with a risk of haemorrhage.<\/jats:p>","DOI":"10.1136\/bcr-2023-258708","type":"journal-article","created":{"date-parts":[[2024,3,27]],"date-time":"2024-03-27T14:24:05Z","timestamp":1711549445000},"page":"e258708","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Retroperitoneal venous malformation mimics paraganglioma on triple imaging modalities"],"prefix":"10.1136","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4501-699X","authenticated-orcid":false,"given":"Paul Brian","family":"Ng Hung Shin","sequence":"first","affiliation":[{"name":"General Surgery, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alexander","family":"Lombardo","sequence":"additional","affiliation":[{"name":"Princess Alexandra Hospital, Brisbane, Queensland, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Katherine","family":"Black","sequence":"additional","affiliation":[{"name":"Princess Alexandra Hospital, Brisbane, Queensland, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2024,3,27]]},"reference":[{"key":"2025082712030476000_17.3.e258708.1","doi-asserted-by":"publisher","DOI":"10.1111\/dgd.12189"},{"key":"2025082712030476000_17.3.e258708.2","doi-asserted-by":"crossref","first-page":"90","DOI":"10.1007\/s12022-022-09704-6","article-title":"Overview of the 2022 WHO classification of paragangliomas and pheochromocytomas","volume":"33","author":"Mete","year":"2022","journal-title":"Endocr Pathol"},{"key":"2025082712030476000_17.3.e258708.3","doi-asserted-by":"crossref","first-page":"280","DOI":"10.3390\/jcm7090280","article-title":"The diagnosis and clinical significance of paragangliomas in unusual locations","volume":"7","author":"Asa","year":"2018","journal-title":"J Clin Med"},{"key":"2025082712030476000_17.3.e258708.4","unstructured":"Ikram A , Rehman A . Paraganglioma. In: StatPearls. Treasure Island (FL): StatPearls Publishing, 2023. Available: https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK549834\/"},{"key":"2025082712030476000_17.3.e258708.5","doi-asserted-by":"crossref","first-page":"353","DOI":"10.1515\/cclm-2020-0904","article-title":"Plasma metanephrines and prospective prediction of tumor location, size and mutation type in patients with pheochromocytoma and paraganglioma","volume":"59","author":"Eisenhofer","year":"2020","journal-title":"Clin Chem Lab Med"},{"key":"2025082712030476000_17.3.e258708.6","doi-asserted-by":"publisher","DOI":"10.1196\/annals.1296.027"},{"key":"2025082712030476000_17.3.e258708.7","doi-asserted-by":"crossref","DOI":"10.1002\/ccr3.5850","article-title":"Primary retroperitoneal cavernous Hemangioma: an exceptional disease in adulthood","volume":"10","author":"Debaibi","year":"2022","journal-title":"Clin Case Rep"},{"key":"2025082712030476000_17.3.e258708.8","unstructured":"ISSVA 2018 classification. 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