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Portal vein aneurysm in the liver associated with multiple vascular malformations
1Department of Gastroenterology, Kanagawa Cancer Center Hospital, Yokohama, Japan.
Abstract:
Portal vein aneurysm (PVA) includes focal dilatation of the portal vein, and was formerly thought to be a rare disease. We report a 46-year-old man with chronic aggressive hepatitis and intrahepatic portal vein aneurysm communicating with the hepatic vein. Hemangiomas in the liver and intracranial arteriovenous malformation (AVM) were also found. To our knowledge, this is the first report of a case of PVA in a patient with congenital intracranial AVM. As the PVA in this patient communicated with the hepatic vein, and as hemangiomas in the liver and intracranial AVM were also present, the pathogenesis in this patient seems to have been congenital anomaly of the vasculature.
Insights
Portal vein aneurysm (PVA), a focal dilatation of the portal vein, is reported in a patient with chronic aggressive hepatitis. This case highlights a rare intrahepatic PVA communicating with the hepatic vein, alongside liver hemangiomas and intracranial arteriovenous malformation (AVM).
Area of Science:
- Vascular Surgery
- Hepatology
- Radiology
Background:
- Portal vein aneurysm (PVA) is a focal dilatation of the portal vein, previously considered rare.
- Understanding the pathogenesis of PVA is crucial for diagnosis and management.
Observation:
- A 46-year-old male patient presented with chronic aggressive hepatitis.
- An intrahepatic portal vein aneurysm (PVA) communicating with the hepatic vein was identified.
- Associated findings included liver hemangiomas and a congenital intracranial arteriovenous malformation (AVM).
Findings:
- This is the first reported case of PVA in a patient with a congenital intracranial AVM.
- The communication between the PVA and hepatic vein suggests a complex vascular anomaly.
- The co-occurrence of liver hemangiomas and intracranial AVM points towards a potential congenital vascular anomaly.
Implications:
- This case expands the known clinical spectrum of portal vein aneurysms.
- It suggests a possible link between PVA and broader congenital vascular malformations.
- Further research into the embryology of vascular development may elucidate the pathogenesis of such complex cases.