{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,15]],"date-time":"2026-05-15T16:49:47Z","timestamp":1778863787529,"version":"3.51.4"},"reference-count":12,"publisher":"BMJ","issue":"1","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2023,12,5]]},"published-print":{"date-parts":[[2024,1]]},"abstract":"<jats:p>Bleeding from a visceral artery pseudoaneurysm (VAPA) is a rare but significant complication of bariatric surgery. Patients may present with gastrointestinal (GI) haemorrhage in the forms of haematemesis, melaena, haematochezia or haemodynamic compromise. Although CT angiogram, endoscopy and laparoscopy form essential parts of diagnostic assessment, small pseudoaneurysms with intermittent bleeding may be overlooked. We report the case of a man in his 40s who presented to the emergency department with massive GI bleeding and subsequent haemodynamic instability, secondary to a pseudoaneurysm from a vascular injury during a recent bariatric procedure. This case highlights the diagnostic challenges of obscure, intermittent bleeding involving the bypassed stomach with unremarkable investigation findings, and aims to raise awareness among clinicians in considering the less common postgastric-bypass complications.<\/jats:p>","DOI":"10.1136\/bcr-2023-258226","type":"journal-article","created":{"date-parts":[[2024,1,10]],"date-time":"2024-01-10T00:18:32Z","timestamp":1704845912000},"page":"e258226","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":2,"title":["Overt gastrointestinal bleeding secondary to left inferior phrenic artery pseudoaneurysm postgastric bypass surgery"],"prefix":"10.1136","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-6961-0243","authenticated-orcid":false,"given":"Mei-Ting","family":"Chen","sequence":"first","affiliation":[{"name":"Queensland Health, Brisbane, Queensland, Australia"},{"name":"The University of Queensland, Saint Lucia, Queensland, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5763-5742","authenticated-orcid":false,"given":"Kay Tai","family":"Choy","sequence":"additional","affiliation":[{"name":"Cairns Hospital, Cairns North, Queensland, Australia"},{"name":"Princess Alexandra Hospital, Woolloongabba, Queensland, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ferdinand","family":"Ong","sequence":"additional","affiliation":[{"name":"Queensland Health, Brisbane, Queensland, Australia"},{"name":"Princess Alexandra Hospital, Woolloongabba, Queensland, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2024,1,3]]},"reference":[{"key":"2025082709264574000_17.1.e258226.1","doi-asserted-by":"crossref","first-page":"611","DOI":"10.1007\/s11695-022-06401-5","article-title":"Efficacy and safety of one anastomosis gastric bypass versus Roux-en-Y gastric bypass for obesity: a meta-analysis and systematic review","volume":"33","author":"Li","year":"2023","journal-title":"Obes Surg"},{"key":"2025082709264574000_17.1.e258226.2","doi-asserted-by":"crossref","unstructured":"Salgaonkar H , Sharples A , Marimuthu K , et al . 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