- SV thrombosis without thrombosis of portal vein
- Primary
- Hypercoaguable/ thrombotic state
- Secondary
- Pancreatitis (chronic = most common cause),
- Pseudocyst
- Inflammation due to posterior gastric ulcer,
- Cancer of pancreas or stomach,
- Idiopathic retroperitoneal fibrosis
- Clinical
- May present as UGIB due to isolated gastric varices (bypass)
- Ix – CT, EUS, MRI
- Mx
- Most asymptomatic & require no Rx – Rx thrombotic condition
- Splenectomy for bleeding varices