title: Direction of portal collateral flow as an indication of the operative risk in porta-caval shunts.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000792:Angiography; D003097:Collateral Circulation; D004932:Esophageal and Gastric Varices / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000601:surgery; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D008103:Liver Cirrhosis / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000601:surgery; D008875:Middle Aged; D011167:Portacaval Shunt, Surgical; D011172:Portography; D011379:Prognosis