Desvio portossistêmico extra-hepático gastrocaval atípico em um cão: relato de caso
Portosystemic shunt (PSS) is a vascular anomaly characterized by an abnormal communication between the portal system and the systemic circulation, resulting in reduced hepatic perfusion and metabolic impairment. The present study aims to report a case of an atypical right extrahepatic gastrocaval po...
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| Autores principales: | , , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | portugués |
| Publicado: |
2026
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| Materias: | |
| Acceso en línea: | https://dialnet.unirioja.es/servlet/oaiart?codigo=10716496 |
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| Sumario: | Portosystemic shunt (PSS) is a vascular anomaly characterized by an abnormal communication between the portal system and the systemic circulation, resulting in reduced hepatic perfusion and metabolic impairment. The present study aims to report a case of an atypical right extrahepatic gastrocaval portosystemic shunt in a Welsh Corgi dog. The patient had a history of recurrent hematuria and crystalluria, with struvite crystals initially identified, followed by calcium oxalate and ammonium biurate crystals, which prompted investigation for PSS. Contrast-enhanced computed tomography enabled identification of the anomalous vesselwith a course compatible with a right gastrocaval shunt, while three-dimensional reconstruction demonstrated splenic drainage involvement in the shunt, representing the only venous drainage pathway of the spleen. Surgical treatment consisted of gradual occlusion of the vessel using an ameroid constrictor ring, combined with splenectomy due to the anatomical condition identified. The patient showed favorable clinical evolution, with progressive recovery of laboratory parameters and absence of clinical signsduring postoperative follow-up. The vascular configuration observed presented a rare and possibly unprecedented anatomical pattern. Computed tomography with three-dimensional reconstruction was essential for diagnosis and surgical planning. The use of theameroid constrictor was effective, resulting in a favorable clinical outcome. |
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