A 24-year-old man presented with a 7-year history of recurrent melena, acutely worsening 3 days prior. He had undergone ...

The underlying conditions favoring or precipitating hepatic vein or inferior vena ... might theoretically precipitate mesenteric or portal vein thrombosis in patients with a thrombogenic disorder.

The CT images showed that the gas formed distinct linear or branching low-density shadows in the main trunk and branches of the portal vein. These low-density areas represent the abnormal gas ...