{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,24]],"date-time":"2026-10-24T01:53:50Z","timestamp":1792806830975,"version":"4.5.0"},"reference-count":12,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"SNC Animal Medical Center","id":[{"id":"https:\/\/ror.org\/03kf3ks42","id-type":"ROR","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Veterinary Sciences"],"abstract":"<jats:p>Hepatic abscesses are uncommon in dogs and typically develop secondary to biliary tract disease or ascending bacterial infections. Although congenital extrahepatic portosystemic shunt (EHPSS) is known to impair hepatic perfusion and immune clearance, its potential role in predisposing geriatric dogs to hepatic abscess formation has not been previously reported. This case report describes the diagnostic approach, therapeutic decision-making, and clinical outcome of a geriatric dog in which a multidrug-resistant hepatic abscess occurred in association with congenital EHPSS, and to propose a pathophysiologic link between chronic portal hypoperfusion and intrahepatic infection. An 11-year-old neutered male Maltese dog with a known EHPSS presented with acute anorexia and lethargy. Diagnostic imaging revealed a hepatic abscess adjacent to the gallbladder, and cytology confirmed a septic process. Despite targeted meropenem therapy based on antimicrobial susceptibility testing, the abscess failed to regress and C-reactive protein levels continued to rise. Concern for persistent biliary contamination and impaired hepatic immune clearance led to surgical intervention. A combined procedure\u2014partial hepatic lobectomy, cholecystectomy, and shunt attenuation\u2014was performed. Postoperative hypotension was managed successfully with vasopressors and transfusion. The patient recovered uneventfully, and at four-month follow-up, hepatic enzyme activities normalized and liver size increased. These findings highlight the need to evaluate hepatic infections in dogs with EHPSS as a potential consequence of impaired hepatic immune clearance rather than an incidental finding.<\/jats:p>","DOI":"10.3390\/vetsci13010037","type":"journal-article","created":{"date-parts":[[2026,1,2]],"date-time":"2026-01-02T11:11:46Z","timestamp":1767352306000},"page":"37","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Multidisciplinary Surgical Treatment of Hepatic Abscess in a Geriatric Dog with Congenital Extrahepatic Portosystemic Shunt"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-3442-8216","authenticated-orcid":false,"given":"Kyu-Duk","family":"Yeon","sequence":"first","affiliation":[{"name":"Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea"},{"name":"SNC Animal Medical Center, Seoul 06244, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6493-2857","authenticated-orcid":false,"given":"Jin-Young","family":"Choi","sequence":"additional","affiliation":[{"name":"SNC Animal Medical Center, Seoul 06244, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ji-Hyeok","family":"Seo","sequence":"additional","affiliation":[{"name":"SNC Animal Medical Center, Seoul 06244, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-4669-2995","authenticated-orcid":false,"given":"Joong-Yeon","family":"Choi","sequence":"additional","affiliation":[{"name":"SNC Animal Medical Center, Seoul 06244, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-6384-5164","authenticated-orcid":false,"given":"Chang-Hun","family":"Moon","sequence":"additional","affiliation":[{"name":"SNC Animal Medical Center, Seoul 06244, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0719-3266","authenticated-orcid":false,"given":"Jung-Hyun","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea"},{"name":"KU Animal Cancer Center, Konkuk University Veterinary Medical Teaching Hospital, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,1,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"665","DOI":"10.1111\/vec.13340","article-title":"Hepatic abscessation in dogs: A multicenter study of 56 cases (2010\u20132019)","volume":"33","author":"Burke","year":"2023","journal-title":"J. Vet. Emerg. Crit. Care"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"243","DOI":"10.2460\/javma.1996.208.02.243","article-title":"Hepatic abscesses in dogs: 14 cases (1982\u20131994)","volume":"208","author":"Farrar","year":"1996","journal-title":"J. Am. Vet. Med. Assoc."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"357","DOI":"10.1111\/j.1740-8261.1998.tb01621.x","article-title":"Hepatic abscesses in 13 dogs: A review of ultrasonographic findings, clinical data, and therapeutic options","volume":"39","author":"Schwarz","year":"1998","journal-title":"Vet. Radiol. Ultrasound"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"203","DOI":"10.1111\/j.1939-1676.1994.tb03216.x","article-title":"Hepatic abscesses associated with diabetes mellitus in two dogs","volume":"8","author":"Grooters","year":"1994","journal-title":"J. Vet. Intern. 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Clin."}],"container-title":["Veterinary Sciences"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2306-7381\/13\/1\/37\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,1,2]],"date-time":"2026-01-02T11:40:26Z","timestamp":1767354026000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2306-7381\/13\/1\/37"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,1,1]]},"references-count":12,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2026,1]]}},"alternative-id":["vetsci13010037"],"URL":"https:\/\/doi.org\/10.3390\/vetsci13010037","relation":{},"ISSN":["2306-7381"],"issn-type":[{"value":"2306-7381","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,1,1]]}}}